PART IV Summary of Comments by dffhrtcv3

VIEWS: 5 PAGES: 120

									PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer         Comments                                                                               Distribution of Ratings



Item #1:         Research for the AASHTO Standing Committee on
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR                         1   16

20-07            Highways                                                                   (46) RAC                 1    1   7   36



Standing Committee on Research
■ [Rating: 5] This project remains beneficial as part of the annual program of the NCHRP and is important to being
  responsive to tasks identified by SCOH.
Research Advisory Committee
■ This Project is always essential. This is a great tool. Rapid Research w/o all the front end admin baggage.

■ It is very important to keep guides, standards and policies updated on a frequent basis for planning and design.
  Information becomes antiquated very quickly in our fast-paced society.


Item #2:         Synthesis of Information Related to Highway Problems
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR                         2   15

20-05                                                                                       (46) RAC                 2    6   6   31



Standing Committee on Research
■ These are always useful and the program should continue.

■ The Synthesis program has a strong track record and should be continued. 13 projects for 1.5 million is a good value.

■ [Rating: 5] This is a cost-effective way to bring together useful knowledge and practice in a well-recognized format and
  series. Continuation of this effort is supported.

Research Advisory Committee
■ This a great tool. Rapid research w/o all the front-end administrative baggage.

■ Very important as an informant for strategic long range planning

■ This is very important since 50 - 70% of government employees qualify for retirement in 5 years or less.


Item #3:         Transportation Pooled Fund Website
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR                     1   1   15

20-82                                                                                       (46) RAC         1   1   1    4   5   33



Standing Committee on Research
■ GREAT way to leverage funds and knowledge.

■ Well worth the small investment - but is this sufficient funding?

■ [Rating: 5] This funding would be used to secure Web site hosting and maintenance of the TPF Web site for the year.
  The Web site is a critical tool in the functioning of the TPF, which effectively leverages resources and stretches the
  impact of research funding.
Research Advisory Committee
■ Good project

■ This needs to be continued.

■ This is a "must have" project


                                                            IV-1
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ Need a better website for pooled fund studies - especially the fiscal reporting.

■ Will complete the project begun in 2009

■ I believe that continued hosting and maintenance of the Website is more appropriate as an FHWA operational cost.


Item #4:         NCHRP-IDEA
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR                         4    13

20-30                                                                                       (46) RAC         1       1    9   11   23



Standing Committee on Research
■ Good program promoting entrepreneurship. Should continue.

■ The program contributes to new product development and solutions to problems by making funds available to cutting-
  edge thinkers.

■ [Rating: 5] Demonstrates high payoff. Highly competitive with around 10 percent proposals funded. Provides funding
  for development that can bridge the gap between research and commercialization. There are few sources for funding of
  this type and no other program that duplicates what NCHRP IDEA provides. Without NCHRP IDEA funding many
  ideas would take substantially longer to move to implementation or would be dropped.


Item #5:         Administration of Highway and Transportation Agencies
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR   2                 2   3    10

20-24                                                                                       (46) RAC    1    1            8   16   19



Standing Committee on Research
■ Given the turnover in leadership of transportation agencies, this is important.

■ Due to re-authorization issues

■ [Rating: 5] This project remains beneficial as part of the annual program of the NCHRP. It permits State DOT CEOs and
  other transportation management to explore critical issues with a short turnaround. The first of the seven keys to a robust
  research program is ensuring that it addresses the needs of top management.


Item #6:         Legal Problems Arising Out of Highway Programs
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR                     2   4    11

20-06                                                                                       (46) RAC         2   1   1    6   11   24



Standing Committee on Research
■ These studies continue to be relevant, especially in these litigious times

■ We agree that there is a continuing need for State Highway Departments to assemble, analyze, and evaluate legal
  elements of special problems involving right of way control, tort liability, environmental and other aspects of highway
  law in general. NCHRP Project 20-06 fills a need for research in these areas which traditionally have not received
  adequate attention and focus elsewhere.

■ [Rating: 5] The studies sponsored by the 20-6 Committee address important, current legal problems and issues of interest
  to highway transportation lawyers and other transportation professionals throughout the United States. The reports
  produced are relied upon heavily by Federal, State, local, and private practitioners as a form of continuing legal education
  and a means of identifying best practices. The need for this research activity continues.
Research Advisory Committee
■ DOTs deal with legal issues in much of their business, especially in torts and eminent domain. We need to be able to
  navigate legal issues and continue to be aware of changes in laws.

                                                             IV-2
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Our Legal & Business Division uses the reference materials frequently.


Item #7:         Research for the AASHTO Standing Committee on
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR                1        10    6

08-36            Planning: Support for Improved Transportation                               (46) RAC         1       1    4   13   26

                 Planning and Project Development
Standing Committee on Research
■ Good project, please continue to ensure reports remain publicly available through TRB

■ The Accountability Report and Attachment A give added support to the many beneficial projects this program has
  supported and why this request is essential to maintaining a viable national transportation planning program for the
  future.

■ The Quick Response program allows for research to be conducted outside of a time-consuming approval process. It can
  effectively provide information to address time-sensitive issues.

■ [Rating: 5] This effort provides practical, quick-response research on public transportation issues in support of the
  AASHTO Standing Committee on Public Transportation.
Research Advisory Committee
■ Mn/DOT is very active on this committee.

■ Quick response research is necessary, but frequently utilized on issues not faced by ODOT

■ Continuation of this is the top priority of AASHTO-SCOP's subcommittee on research (that advises the SCOP chair
  about 08-36 quick-response research projects).
Other
■ [Rating: NR] SCOP considers the continuation of NCHRP 08-36, Research for the Standing Committee of Planning, to
  be its highest priority.


Item #8:         Asphalt Foaming Characteristics for Warm Mix
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR                     3   6    8

D-08             Asphalt Applications                                                        (46) RAC             1   4    4   14   22



Standing Committee on Research
■ The use of WMA technology involving foamed asphalt is becoming more and more widespread in Virginia and across
  the US. However, basic understanding of foamed asphalt properties and characteristic are lacking. This research could be
  very important in addressing some fundamental questions like: would asphalt from different sources foam similarly or
  have similar performance? Although the SOM panel recommends combining D05, D-07, D-08, and D-09, I disagree, as
  there are too many issues being addressed to effectively combine 4 statements. I support combining D-08 and D-09 as
  these deal with primarily with foaming applications and their impact in WMA. This is an issue of significance
  considering that, at least in VA, the majority of WMA is being produced using foaming mechanisms due to the cost and
  availability of these systems. Yet there is almost no information available to quantify the effects of various foam
  mechanisms on performance or design. As the WMA market is expected to increase significantly over the next few
  years, understanding these effects and addressing them during design becomes even more important.

■ Combine into one program, 4 yrs., $1.5 million. (D-05, 07, 08, and 09)

■ D05, D07, D08, & D09 should be combined w/funding @ $1.5m,

■ combine D05,07,08,09


                                                            IV-3
PART IV: Summary of Comments                                                                                       13-Apr-11
Reviewer        Comments                                                                             Distribution of Ratings

■ Recommend a combined ranking of "4" for D05, D07, D08 and D09.

■ WMA technology is being implemented very rapidly and this research is needed to support the implementation process.

■ Budget is excessive

■ Combine D08 & D09.

■ Suggest combining this proposal with D-07.

■ [Rating: 0] Combine D-05, D-07, D-08, and D-09 (Would be rated 5 if combined). And, if all are combined, the funding
  level should be $1,000,000.

Research Advisory Committee
■ Combine Problem Statements D-05, D-07, D-08, and D-09 into one research project entitled “Laboratory Conditioning
  and Testing of WMA Binders and Mixtures”

■ This proposal duplicates the concepts in Problem Statement 2012-D-09 and could be combined to reduce some of the
  funding and duration.

■ Consider combining with D-07 and D-09.

■ See D05 comment- rating is for combo only

■ Suggest combining D-05, D-07, D-08, and D-09 and funding at $1.5 million for 48 months.

■ Implementation aspects.

■ D-08 and D-09 are very similar. This one has a better objective, research approach, and end result of the project. Only
  one should be funded: D-5,7,8 are very similar - I like 5 and 8 the best

■ Not only was this the highest ranked research proposal endorsed by the AASHTO Subcommittee on Materials it is also of
  great interest to MDOT. Currently, about 80% of all asphalt pavement produced in Mississippi is Warm Mix. We are
  interested in the development new test criteria that better estimates the long term performance of WMA.

■ Combine, 08 and 09

■ This is a big need in North Carolina as we are expanding our use of Warm Mix and a bulk of the tonnage already placed
  utilizes foaming technology. It is anticipated as we expand that this will continue to be the prevalent technology used by
  contractors as many of them have already invested in this process. This project will provide many benefits including:
  guidelines for evaluating different technologies, laboratory procedures for evaluating the technologies, and
  recommendations for mix design and plant production using these technologies.

■ Research on foaming is needed. However, this study is for information and not performance. The testing of the mixes
  and other research proposed would determine whether the final product was acceptable exclusive of whether the foaming
  fit some form or not.

■ Combine with D-05, D-07, and D-09

■ Combine with D-05. Characterization of WMA technologies could be useful in determining which technologies will
  work and provide long term performance.




                                                            IV-4
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings



Item #9:         Long-Range Strategic Issues Facing the Transportation
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR        1                6    10

20-83            Industry                                                                   (46) RAC         2   1   2    6   14   20



Standing Committee on Research
■ Suggest reducing to $200,000

■ Budget is too high

■ DOTs are and will continue to evaluate prioritizing needs in light of limited resources (financial and/or natural). The
  current research will help us understand emerging technologies along with changing socioeconomic data to help us
  understand long term challenges and opportunities that will lead to more informed decision making.

■ [Rating: 4] Funding request is critical to disseminate and integrate results of ongoing projects. (Could live with smaller
  amount: $300k)
Research Advisory Committee
■ Very timely questions to be asked.

■ Appears some good information may come from this, especially related to freight and funding.

■ Continuation of this is the top priority of AASHTO-SCOP's subcommittee on research (that advises the SCOP chair
  about 08-36 quick-response research projects). WSDOT has been and will be active in quite a number of these projects.


Item #10:        Accelerating the Application of NCHRP Research
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR            1        3   3    10

20-44            Results                                                                    (46) RAC         1   1   2    7   12   22



Standing Committee on Research
■ Funding supporting implementation, should advance implementation strategies

■ This is geared to provide implementation on a more timely basis and also to target best practices to package and market
  research more quickly!

■ How effective has this been? Suggest reducing to $200,000.

■ Research leads to innovation only when it is implemented. This program enables the application of research results.

■ [Rating: 5] Support project continuation as important for implementation of NCHRP results. Support expansion of
  project to include panel to provide better strategic direction on NCHRP implementation. (Could live with smaller
  amount: $300k)
Research Advisory Committee
■ Getting recent NCHRP finding to the end user is needed for advancement.


Item #11:        Highway Research and Technology—International
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR                     1   7    9

20-36            Information Sharing                                                        (46) RAC             1   2   14   14   14



Standing Committee on Research
■ Often much can be gained by observing transportation practices in other parts of the world

■ [Rating: 5] This project provides essential financial support for the FHWA Int'l Scanning Program as well State DOT

                                                            IV-5
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

  participation in scan missions and associated implementation. It also supports State DOT participation in the World Road
  Assn, expanding US influence in that body beyond the capabilities of FHWA alone. These initiatives are important
  demonstrations of FHWA's national leadership as the US's principal interface, understanding additional participation by
  State-level partners (enabled by this project) is a force multiplier for these efforts.

Research Advisory Committee
■ SCAN Projects are generally OK and you aren't going to stop the funding but I don't know how well the research is
  implemented.

■ This seems to be an expensive endeavor in these lean economic times. Information can be shared using technology such
  as webinars.

■ Huge return for small investment. ATM work came out of this, for example.


Item #12:        Update of the AASHTO Guide for the Planning, Design,
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR   5        1        1   3   7

C-13             and Operation of Pedestrian Facilities                                       (46) RAC    19       1   1    6   9   9



Standing Committee on Research
■ The funding could likely be reduced to around $200,000. The following comments are offered.

  Strengths

  - The project has merit: the scoping work done in 20-07 Task 263 shows a survey of users with more than half being
  state DOTs. To that end there is use and interest in the guide. Certainly practical ways of accommodating pedestrians is
  generally a productive theme to examine.
  - Some preliminary work in terms of updating the guide has already been done. The above-mentioned 263 lays out a
  chapter-by-chapter overview of revisions.

  Weaknesses

  - The survey of users shows that many persons are interested in compliance with the ADA Accessibility Guidelines for
  Buildings and Facilities—and those regulations are not yet published yet according to the problem statement. Thus if
  consistency with regulations is desired, then a prime area of interest (according to the survey) cannot yet be addressed.
  - While 20-07 Task 263 identifies many important areas, it is not clear if all of these areas can truly be captured, or need
  to be captured, in the guide. For example, while midblock crossings are appropriate, some of the other topics are covered
  in other resources, such as “pedestrian level of service” and “Demand forecasting/modeling.” It is unfortunate that the
  problem statement that was submitted did not specify which items of the many in 20-07 Task 263 should be the focus of
  an update.

  For that reason, perhaps the step to take here is to spend a small amount of money and provide a web-accessible interim
  update to the guide that addresses those treatments and devices that, according to the problem statement, have been
  “popularized” but for which design guidance is lacking.

■ I would hope that the research would include pedestrians and bicyclists design issues/treatments at roundabouts as well as
  accommodations for sight impaired pedestrians at roundabouts.

■ - ADA guidelines are changing and cities, counties and states need a simple concise overview of impacts and how to
  address them. While the ADA guidelines for public ROW will go to final rule, as stated in the problem statement, the
  tasks don’t mention how the ADA guidelines will be incorporated.
  - Nothing is mentioned about the Fed’s livability/sustainability initiative and how this research will address the initiative.
  - Nothing is mentioned about reauthorization and performance based planning which may impact what needs to be in the
  guide.
  - A new MUTCD has been published that needs to be reflected in the update.

                                                             IV-6
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Not research. This is a proposal that should be discussed in light of the White Paper that RAC submitted to SCOR on
  how to fund updates to AASHTO guides, specs, manuals, etc.

■ The update is appropriate given the increasing need for guidance in designing pedestrian facilities, the increasing interest
  in pedestrian (and bike) facilities, and the rapidly changing environment. For example, there are a number of innovative
  ideas being developed for bikes and pedestrians -- safety enhancements, public awareness tools, etc. -- some of them in
  the broader community and not necessarily the DOT or engineering environment. Through tools like "Streetsblog" these
  ideas spread rapidly, and it would be good to try to reflect more recent developments through updated guidelines.

■ [Rating: 5] This project is a high priority. NCHRP 20-07/Task 263 was just completed and outlined new research
  findings to incorporate into the next AASHTO ‘Pedestrian Guide’. It is important to update the Guide in a timely manner.
Research Advisory Committee
■ This is important. The AASHTO Ped Guide is our primary reference for pedestrian facilities in Roadway Design
  Guidelines (http://tinyurl.com/59pmrr, pp. 1, 100-13, & 300-54). The update would ensure that the new ped facilities in
  2009 MUTCD are included. Also, the Guide will need to be updated to reflect final rule-making of ADA guidelines for
  public rights-of-way.

■ California is in the process of updating the Manual of Uniform Traffic Control Devices (CA-MUTCD) which will
  incorporate all the changes to the MUTCD.

■ We agree that updating the guide is very important.

■ We believe this project is needed, but are a little concerned with the scheduling between the ADA item going to rule
  making next year and the start of this project. It seems that the project should not start until after the rule making has
  officially started and is accepting comments. If the rules have significant changes (and this is likely) then we do not want
  the NCHRP project to be too far along and have to back track.

■ This project is really important to WSDOT and cities and counties within the state. There is a bill moving through the
  legislature now that would make this AASHTO guide applicable to biking and walking projects in Washington.


Item #13:        Quick Response Research for the AASHTO Standing
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR                2    2   5     8

25-25            Committee on the Environment                                                (46) RAC         1   1   5    3   13   22



Standing Committee on Research
■ This has multiple quick action components that we use.

■ The Accountability Report and Appendix B give added support to the many beneficial projects this program has
  supported and why this request is essential to maintaining a viable national environmental planning program.

■ Of great importance to ADOT and other DOTs

■ [Rating: 5] FHWA supports the AASHTO Center for Environmental Excellence which maintains the TERI database of
  research needs. Via an annual cycle FHWA and SCOE committees vet needs and arrive at priorities for project/program
  delivery. These quick turn around funded projects signal national challenges, document state of the practice, and prepare
  practitioners for emerging issues. Projects are coordinated with STEP.
Research Advisory Committee
■ EPA Effluent Limitations Guideline will influence decisions

■ The committee really uses this a lot.




                                                            IV-7
PART IV: Summary of Comments                                                                                           13-Apr-11
Reviewer        Comments                                                                              Distribution of Ratings



Item #14:       Laboratory Foaming and Mixing Processes for WMA
                                                                                                      NR   0   1   2    3   4    5
                                                                                          (17) SCOR        1            2   7    7

D-09            Mix Design                                                                (46) RAC         1   2   1    8   12   21



Standing Committee on Research
■ Although the SOM panel recommends combining D05, D-07, D-08, and D-09, I disagree, as there are too many issues
  being addressed to effectively combine 4 statements. I support combining D-08 and D-09 as these deal with primarily
  with foaming applications and their impact in WMA. This is an issue of significance considering that, at least in VA, the
  majority of WMA is being produced using foaming mechanisms due to the cost and availability of these systems. Yet
  there is almost no information available to quantify the effects of various foam mechanisms on performance or design.
  As the WMA market is expected to increase significantly over the next few years, understanding these effects and
  addressing them during design becomes even more important.

■ Combine into one program, 4 yrs., $1.5 million. (D-05, 07, 08, and 09)

■ D05, D07, D08, & D09 should be combined w/funding @ $1.5m.

■ combine D05,07,08,09

■ Recommend a combined ranking of "4" for D05, D07, D08 and D09.

■ WMA foaming is being adopted very rapidly nationwide and laboratory processes that will simulate the field foaming are
  essential.

■ Strong Benefit to ADOT. Key to implement WMA

■ Combine D08 & D09.

■ Recommend this research be postponed until results from the NCHRP study 2012-D-08 is completed. The results will
  provide some insights on the foaming of asphalt. This information can then help the laboratory study.

■ [Rating: 0] Combine D-05, D-07, D-08, and D-09 (Would be rated 5 if combined). And, if all are combined, the funding
  level should be $1,000,000.
Research Advisory Committee
■ Combine Problem Statements D-05, D-07, D-08, and D-09 into one research project entitled “Laboratory Conditioning
  and Testing of WMA Binders and Mixtures”

■ The benefit of Warm Mix Asphalts (WMA) has great potential. As with all new technologies, premature use for
  evaluating is then followed by further testing and research to allow for better longevity and performance.

■ Consider combining with D-07 and D-08.

■ See D05 comment- rating is for combo only

■ Suggest combining D-05, D-07, D-08, and D-09 and funding at $1.5 million for 48 months.

■ Implementation aspects.

■ Focus is quite narrow.

■ This is very interesting, but possibly could be combined with D-08 as there seems to be overlap.

■ Combine 08 and 09


                                                           IV-8
PART IV: Summary of Comments                                                                                            13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings

■ Needs to be done to complete the findings of 09-43. Question is: "How do we replicate foaming in the Lab?" This
  research is needed to find the best lab apparatus/technologies for doing this. The equipment used in 09-43 was not
  manufactured for WMA and had to be greatly modified to produce WMA in the lab, and had a lot of variation in the
  results. We have a research project with NC State on WMA where a Lab Foamer was purchased. D-09 will provide
  guidance for procedures and protocols for us when the Foamer is turned over to NC DOT.

■ Direct need from NCHRP 9-43.

■ Combine with D-05, D-07, and D-08

■ Combine with D-05. Once D-08 has characterized the WMA technologies then this research could provide designers a
  missing piece of laboratory equipment.


Item #15:        U. S. Domestic Scan Program
                                                                                                       NR   0   1   2    3   4    5
                                                                                           (17) SCOR                     6   4     7

20-68A                                                                                     (46) RAC         1       2    9   19   14



Standing Committee on Research
■ Like to see some products / results. Could there be a short presentation given?

■ The program promotes the exchange of information that can lead to the application of best practices.

■ [Rating: 5] This tool is an effective way of accelerating delivery of proven innovations, technologies, and processes. The
  concept of sharing "best" practices from State to State is essential for organizations to understand and rapidly implement
  transportation related improvements in a cost effective way.
Research Advisory Committee
■ This has a High National Priority

■ This seems to be an expensive endeavor in these lean economic times. Information can be shared using technology such
  as webinars.


Item #16:        Short-Term Laboratory Conditioning of WMA
                                                                                                       NR   0   1   2    3   4    5
                                                                                           (17) SCOR                1    4   7    5

D-07             Mixtures for Mix Design and Performance Testing                           (46) RAC             2   3    5   16   19



Standing Committee on Research
■ The results of this research could provide very important guidance on how to realistically evaluate WMA performance.
  The question of whether WMA performance is comparable to HMA could also be addressed based on the results of the
  study. Although the SOM panel recommends combining D-05, D-07, D-08, and D-09, I disagree, as there are too many
  issues being addressed to effectively combine 4 statements. I support the combination of D-05 and D-07, if necessary, as
  these are primarily dealing with aging and laboratory conditioning. This research is very important as, especially with
  the introduction of WMA, it has become widely evident that the existing procedures for mixture aging and conditioning
  developed during the SHRP research are not providing consistent or accurate results when compared amongst plant mix,
  lab-produced mix, and between HMA and WMA. Since these differences in results can be significant, it is of great
  interest to states to support the improvement in aging and conditioning procedures that will support the use of quality
  mixtures having good performance characteristics.

■ Combine into one program, 4 yrs., $1.5 million. (D-05, 07, 08, and 09)

■ D05, D07, D08, & D09 should be combined w/funding @ $1.5m.

■ combine D05,07,08,09

■ Recommend a combined ranking of "4" for D05, D07, D08 and D09.
                                                           IV-9
PART IV: Summary of Comments                                                                                      13-Apr-11
Reviewer        Comments                                                                             Distribution of Ratings


■ Developing procedures for short-term aging is critical as there are major concerns relative to rutting and moisture damage
  with WMA.

■ Budget is excessive

■ Combine D05 & D07.

■ Consider combining this research with D-08.The "Every Day Counts" program is encouraging the use of Warm Mix
  Asphalt (WMA). Problem Statement D-07 looks at WMA samples preparation the laboratory mix design process. The
  result of this research will form a crucial part of a credible WMA mix design process. The availability of an acceptable
  WMA mix design process is critical in encouraging state and local agencies in adopting WMA. The mix design process
  for foaming WMA is still under development. NCHRP will have the resources to complete the needed research in a
  timely manner.

■ [Rating: 0] Combine D-05, D-07, D-08, and D-09 (Would be rated 5 if combined). And, if all are combined, the funding
  level should be $1,000,000.
Research Advisory Committee
■ Combine Problem Statements D-05, D-07, D-08, and D-09 into one research project entitled “Laboratory Conditioning
  and Testing of WMA Binders and Mixtures”

■ Consider combining with D-08 and D-09.

■ See D05 comment- rating is for combo only

■ Suggest combining D-05, D-07, D-08, and D-09 and funding at $1.5 million for 48 months.

■ We need some answers from the national level

■ Implementation aspects.

■ Similar to D-05. Better defined. This project only develops a lab aging procedure for WMA that gives the same
  properties as HMA under the current protocol. Only one of these should be funded (05 or 07):D-5,7,8 are very similar - I
  like 5 and 8 the best

■ This is very interesting, but possibly could be combined with D-05 as there seems to be overlap.

■ Combine 05, 07

■ Questions still exist as to how to equate HMA and WMA in the lab. This research is needed to determine specific lab
  procedures for mix design and TSRs.

■ Recommend combing D-08, D-08, and D-09.

■ Combine with D-05, D-08, and D-09

■ High priority. WMA is the future. Once D-08, D-09 and D-05 have been completed then this research could help
  answer some of the questions pertaining to WMA mix design.




                                                          IV-10
PART IV: Summary of Comments                                                                                                 13-Apr-11
Reviewer        Comments                                                                                    Distribution of Ratings



Item #17:        Research for the AASHTO Standing Committee on
                                                                                                            NR   0   1   2    3   4    5
                                                                                                (17) SCOR                2    2   7    6

20-65            Public Transportation                                                          (46) RAC         2       2    8   14   19



Standing Committee on Research
■ [Rating: 5] This effort provides practical, quick-response research on public transportation issues in support of the
  AASHTO Standing Committee on Public Transportation.


Item #18:        Precision Statements for AASHTO Standard Methods
                                                                                                            NR   0   1   2    3   4    5
                                                                                                (17) SCOR        1       2    1   7     6

10-87            of Test                                                                        (46) RAC         2       1    7   13   22



Standing Committee on Research
■ This is a valuable program and should continue. When CCRL program information is involved, the researchers should
  collaborate with those involved from the ASTM side.

■ We use precision and bias statements only sparingly to compare QA/QC test results.

■ Current precision and bias data is needed in independent assurance and verification programs.

■ National need, but it's not clear if this project has an endpoint or if it is intended to be perpetual. If the latter, is NCHRP
  the appropriate funding mechanism?

■ [Rating: 4] The precision statements developed through this project are an important element of the AASTHO standards
  it supports.
Research Advisory Committee
■ High importance to Materials

■ we need to update precision statements

■ This will support the ongoing effort by AASHTO Subcommittee on Materials to provide important precision indicators
  for various test methods

■ These are critical to any Materials test.

■ There is a critical need to determine and publish accurate precision statements for AASHTO test methods. This is an
  essential component of a test method and needs to be provided to the users of the test methods.

■ We use these as our standards on all Infrastructure & Preservation projects


Item #19:        Technical Guidance for Traffic Incident Management
                                                                                                            NR   0   1   2    3   4    5
                                                                                                (17) SCOR                1    3   5    8

G-46             Performance Measurement Implementation                                         (46) RAC    1    1   2   4   10   11   16



Standing Committee on Research
■ Very important issue. DOTs are consistently seeking guidance on IM performance measures and this project will provide
  much needed help in this area.

■ Technical guidance for Incident Management is well documented in the Command and Control procedures that modern
  first responders work under, among themselves and the highway authorities. There is always room for improvement, but
  it is not clear how this research will expand upon that knowledge base. Further, such research needs to have the full
  support of the fire, rescue and law enforcement professions before anything can be implemented by the State highway

                                                              IV-11
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

  authority.

■ National data will be useful as a comparison with Caltrans data.

■ [Rating: 5] As FHWA visits top 40 urban areas to provide TIM Workshops, jurisdictions continually comment on the
  difficulty they are having collecting key TIM Performance Measurements, including time lanes are closed, time of
  responders at the incident scene, and number of secondary crashes. This guidance is needed to aid jurisdictions collect
  key performance data for their own use and to aid FHWA in its attempts to get a national snapshot on TIM performance
  on-scene.

Research Advisory Committee
■ Performance measures and regional comparisons would be beneficial.

■ Probably need to increase budget


Item #20:        Development of Transportation Technology Transfer
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR                1    5   5    6

SP-03            Primer on Best Practices                                                    (46) RAC                 4   11   15   15



Standing Committee on Research
■ Update is needed given the new technologies and tools available to ensure transfer and implementation of new practices

■ This is very clearly needed in my opinion. I hope that, if it is approved, the research gets "down into the details" and the
  reality of technology transfer within the various DOTs. Every DOT is structured differently so this may be somewhat
  difficult.

■ Possible synthesis topic

■ Implementation of research results is vital. This Problem Statement would provide needed guidelines.

■ [Rating: 3] Agree that it has been too long since past NCHRP reports on technology transfer given changes in industry,
  organizational arraignment, and technology. Concerned, however, problem is too broad given resources. It is difficult to
  generalize across applications.
Research Advisory Committee
■ Integrate closely with NCHRP Report 610. Audience should be DOT Research Programs, University Transportation
  Centers, and LTAP Centers.

■ Technology transfer is an important component in implementation of research project results. This Problem Statement
  addresses an important need. However, the authors of the Problem Statement did not provide any detail on the proposed
  methodology or work tasks, making it difficult to assess the estimated cost and time frame.

■ Most states need help in technology transfer and implementation of research. This is a weakness of most state research
  programs.

■ Update of this primer is warranted considering the major developments in the technology transfer as well as the
  information and communication technology fields. The first edition of this primer was of tremendous benefit to the
  practitioners. The primer will provide a guide to transferring research products into day-to-day operations and contribute
  to bridging the gap between theory and practice.

■ Technology transfer is essential in making the needed changes for the advancement of better practices.

■ The guide "book" should be an online toolkit to broadly help the transportation community with tech transfer.



                                                            IV-12
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings



Item #21:        Guidance for Complying with EPA Effluent Limitation
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR            3        1   3   10

D-18             Guidelines for Construction Runoff                                          (46) RAC    1    1   2   4    9   8   20



Standing Committee on Research
■ Important research and now is the time to do it, given EPAs new guidelines. Budget may be a bit high for research that
  requires no field work or testing. Very good problem statement. There is some overlap with other statement(s) as was
  mentioned by other NCHRP and FHWA reviewers. Because the regulations pertaining to this problem will take affect in
  early 2012, I wonder if this can be addressed through the normal NCHRP process?

■ Very important. Will affect specifications and construction operations/costs.

■ At a state level we have approached ADEQ in order to try and be proactive. Cost is one element that needs to be figured
  into this research. There are some solutions out there that may be effective but be cost prohibitive.

■ Caltrans is implementing aggressive standards and would be willing to share.

■ [Rating: 5] Expands on quick response NCHRP 25-25 and looks at representative sampling techniques, protocols and
  procedures for monitoring. Priority need in regards to EPA Effluent Guidelines.
Research Advisory Committee
■ Consider conducting this study under NCHRP 25-25

■ EPA is set to comment in 2012 and possibly raise the numeric standard. There is sufficient time to look at current DOT
  approved sediment control systems and whether they would meet the 280 turbidity limit. Has the private sector been
  developing any systems or products that would comply with the current 280 NTUs?

■ Important study.

■ May need to revisit scope and funding based on outcome of NCHRP 25-25 funding for Prob. #9

■ KDOT need. Impending Mandate.

■ 1) EPA changing regs, urgent potential cost impact to the department; 2) In light of the new effluent limitation guidelines
  (ELGs) from EPA, this research will help DOTs meet new requirements on linear projects and develop monitoring
  protocols that DOTs can present to their state regulators.

■ LRRB and TRIG have been asking for things like this - national review might be good.

■ This is an important topic to evaluate cost effective methods for compliance.

■ Research approach will need work to better ensure it will address the states needs.

■ Suggest a review of practice
Other
■ [Rating: 5] The new EPA regulations make this a critical issue for every DOT. It rated #1 in a recent survey by SOC.

■ [Rating: 5] SCOE has selected this stormwater research as one of its top priorities. This research is vital in assisting the
  State DOTs in meeting EPA’s new effluent limitations guidelines (ELG). NCHRP 25-25 Task 74 has set aside $125,000
  to begin investigating this research. The members of the 25-25 panel and SCOE hope to meet the most critical
  components of the research in a quick turnaround approach by the end of 2011. This research would build upon the
  findings of task 74. Most DOTs do not have construction site monitoring in place, therefore this research will be critical
  in setting a baseline regarding testing protocols.

                                                            IV-13
PART IV: Summary of Comments                                                                                                  13-Apr-11
Reviewer        Comments                                                                                     Distribution of Ratings



Item #22:        Improving Access to International Transportation
                                                                                                             NR   0   1   2    3   4    5
                                                                                                 (17) SCOR            1   1        9    6

SP-02            Research Information                                                            (46) RAC    1    2       5    9   16   12



Standing Committee on Research
■ While transportation researchers in the U.S. and abroad have the ability to post research documents online, there is still
  no authoritative source for either citations to quality research, or the research itself. It is scattered far and wide. Tools
  like Google give us a “compelling user experience” only TRB tools like TRIS combined with a strategy for the archiving
  and preservation of research materials will result in the needed outcome. The research problem statement for SP-02 is
  accurately stated, the objectives are simple and attainable and the funding is adequate for the stated task and there is a
  recognized need within AASHTO and TRB for this work to be done and TRB is the best platform for U.S. International.
  A qualified pool of candidates exists to perform this work, so I say we support it.

■ State DOTs need to be looking to other sources for literature on research especially internationally. The international
  focus should include other countries in addition to Europe.

■ [Rating: 5] This project links the opportunity for collaboration between highway builders of Europe with highway
  builders of the U.S.
Research Advisory Committee
■ NCHRP is the most appropriate place to address this need. Because this problem statement is the result of an
  International Scan Tour, a great deal of background and work supports its merit. Well written and supports the "time is
  right for this initiative." During these fiscally restrictive times, it is important to share information and be fully aware of
  all existing work, to get the most bang for the buck when conducting and collaborating on research.

■ I thought that the TRID (Transport Research International Documentation) contains everything that was in TRIS and
  TRISworld and more. It is a multilingual database with more than 900,000 records of published or on-going research in
  English, German, French or Spanish.

■ We strongly support this project- it is timely and will benefit the entire library and research community

■ Having access to international research results will allow local researchers not to duplicate work of others. It will also
  give some guidance by which to leverage what was done previously abroad.


Item #23:        Guidelines for Slope Traversability
                                                                                                             NR   0   1   2    3   4    5
                                                                                                 (17) SCOR            1        3   6    7

C-10                                                                                             (46) RAC    1    1   1   6   12   11   13



Standing Committee on Research
■ Interesting and useful. The cost estimate is low; at least double this estimate is possible.     Budget seems short for doing
  all three, crash analysis, actual vehicle testing, and computer simulation.

■ Its a good topic for research... could produce significant changes to the Roadside Design Guide.

■ Builds upon previous research (NCHRP 17-11) to address how changes in the vehicle fleet affect the traversability of
  slopes. The data would be used in a benefit-cost analysis to determine appropriate slope for a given road.

■ Our current policy regarding the traversablilty of roadside slope is based on research that is over 30 years old. Since then
  vehicle technology has change dramatically. There have been changes to vehicle mass, center of gravity, suspension
  systems, and tires. It is very likely that the guidelines need to be updated.

■ [Rating: 3] There is a need for updated slope traversability criteria, but limited data has thwarted efforts. New insights
  have been gained from efforts currently underway (e.g., FHWA research and NCHRP Projects 22-25 and 16-05) that
  have the potential to support updates to slope criteria. This effort could support addressing differences or gaps needed to
                                                             IV-14
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings

  translate the results into guidelines.

Research Advisory Committee
■ Not a major breakthrough, but a needed update to old guidelines.

■ Essential. Need for AASHTO Roadside Design Guide

■ Because the current Roadside Design Guide is using 40-50 yr old studies on this topic, new research is warranted
  especially considering the changes in the passenger vehicle fleet over the last half century.

■ Ranked High by AASHTO Subcommittee on Design

■ Unclear on the statement if current guidance in so outdated it's no longer valid.

■ High return on investment
Other
■ [Rating: NR] Rank #1


Item #24:        Culvert and Storm Drain Inspection Manual
                                                                                                           NR   0   1   2    3   4   5
                                                                                               (17) SCOR            2   1    2   5   7

F-01                                                                                           (46) RAC    1    2   1   3   13   8   17



Standing Committee on Research
■ There is a need for this type of research, with specific references to different pipe materials.

■ Efforts are underway to increase efforts on evaluating culvert structures, therefore the documents that guide these
  evaluations should be updated.

■ The Culvert Inspection Program in California is still very much a work-in-progress. If NCHPR conducts this research on
  culvert inspection, perhaps all the State DOTs can learn some things from the research so that DOTs can improve their
  process.

■ [Rating: 4] There is a critical need to update the "Culvert Inspection Manual" as the old manual does not address storm
  drain systems which need to be included in an updated manual.
Research Advisory Committee
■ Unclear why Problem Statement and FHWA review did not mention FHWA's new Manual: "Culvert Assessment and
  Decision-Making Procedures Manual" (Publication No. FHWA-CFL/TD-10-005, September 2010)

■ Recommend by SCOBS (1)

■ This is a good idea. We get questions everyday from the districts about how to fix/repair deteriorated pipes and drains. It
  looks like there was a well rounded committee established for this one also.

■ Uniform evaluation practices and recommended treatment selection process would be very beneficial.

■ Also ranked 0, maint.

■ The 1986 FHWA Culvert Inspection Manual is extremely outdated. New materials for culvert repair and replacement,
  and new technologies for culvert locating and assessment exist, and need to be referenced in any updated and
  comprehensive guide to culvert inspection. There was no reference in the problem statement for technologies which exist
  to locate culvert ends where one end is buried or underwater, and the other end accessible. There are sensors and sensing
  devices which can perform such functions currently. This technology can assist with determining alignment as a
  component of overall condition in many cases. Budget seems inadequate for scope.

                                                             IV-15
PART IV: Summary of Comments                                                                                            13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings

■ State specific.
Other
■ [Rating: 5] # 1 priority of the Subcommittee on Bridges and Structures

■ [Rating: 4] Needed, but may be difficult to complete with all that’s listed under objectives for the money listed…


Item #25:           Develop an Approach for Lab Mix Short Term Aging
                                                                                                       NR   0   1   2    3   4    5
                                                                                           (17) SCOR        1       1    4   5    6

D-05                That Correlates to Various HMA Plant Processing and                    (46) RAC         1   2   5    8   13   16

                    Warm Mix Asphalts
Standing Committee on Research
■ WMA uses relatively lower temperatures for mixing and compaction. Therefore, WMA turns to age less (are softer) than
  conventional hot-mixes. Softer asphalt mixes are resistance to cracking but prone to rutting. Therefore the issue of aging
  in WMA is a very important issue to address. Although the SOM panel recommends combining D-05, D-07, D-08, and
  D-09, I disagree, as there are too many issues being addressed to effectively combine 4 statements. I support the
  combination of D-05 and D-07, if necessary, as these are primarily dealing with aging and laboratory conditioning. This
  research is very important as, especially with the introduction of WMA, it has become widely evident that the existing
  procedures for mixture aging and conditioning developed during the SHRP research are not providing consistent or
  accurate results when compared amongst plant mix, lab-produced mix, and between HMA and WMA. Since these
  differences in results can be significant, it is of great interest to states to support the improvement in aging and
  conditioning procedures that will support the use of quality mixtures having good performance characteristics.

■ Combine into one program, 4 yrs., $1.5 million. (D-05, 07, 08, and 09)

■ Combine with D7,D8, D9

■ D05, D07, D08, & D09 should be combined w/funding @ $1.5m,

■ combine D05,07,08,09

■ Recommend a combined ranking of "4" for D05, D07, D08 and D09.

■ We need to understand how much aging occurs when asphalt binders are subjected to various plant types, and have lab
  test procedures that will simulate this aging.

■ Budget is excessive

■ Combine D05 & D07.

■ A study similar to this is scheduled at the University of California Pavement Research Center in early 2011.

■ [Rating: 5] Combine with D-07, D-08, and D-09. These problem statements address closely-related issues surrounding
  the need to adapt laboratory test methods to be more consistent with the production methods used for warm mix asphalt
  materials. By addressing these issues, the risk of both premature failure and "over-design" of warm mix asphalt materials
  will be reduced.
Research Advisory Committee
■ Combine Problem Statements D-05, D-07, D-08, and D-09 into one research project entitled “Laboratory Conditioning
  and Testing of WMA Binders and Mixtures”

■ Combine D05 and D07-09

■ Important study.

                                                           IV-16
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ Green technology is being pushed by FHWA as part of Every Day Counts initiative, but questions still remain on WMA.
  Suggest combining D-05, D-07, D-08, and D-09 and funding at $1.5 million for 48 months.

■ Testing dollar savings.

■ This project aims to re-do the lab aging procedure altogether. Not well defined but a good topic;D-5,7,8 are very similar -
  I like 5 and 8 the best

■ Not only was this the highest ranked research proposal endorsed by the AASHTO Subcommittee on Materials it is also of
  great interest to MDOT. Currently, about 80% of all asphalt pavement produced in Mississippi is Warm Mix. We are
  interested in the development new test criteria that better estimates the long term performance of WMA.

■ Combine 05, 07

■ D-07 will provide sufficient information for less cost and in less time.

■ Very important. There is some indication our WMA projects may be slightly overasphalted leading to sheen and
  sensitivity to over rolling. However, the statement needs to include "shalls" rather than "mays" for a system to evaluate
  plant's type and configurations.

■ Combine with D-07, D-08, and D-09

■ Combine with D8. Once D-08 and D-09 have been completed then this research could make the mix design process more
  closely represent the final production mixture would be of benefit.


Item #26:        Development of Crash Reduction Factors for
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR            2        1   9    5

G-01             Uncontrolled Pedestrian Crossing Treatments                                (46) RAC    1    1   4   5    8   16   10



Standing Committee on Research
■ Combination of treatments should be considered. Funding less than $400k with 24 months seems proper.

■ This would be particularly important as the new AASHTO Highway Safety Manual does not have good information on
  treatments to improve pedestrian safety.

■ There are still some controversies going on regarding HAWK (one of the items proposed to be researched), but overall a
  good problem.

■ [Rating: 5] The potential payoff of this project is high. Safety effectiveness information on pedestrian crossing
  treatments is very limited. The results from this study are needed to improve guidelines and standards for pedestrian
  safety. There is a critical need for the results and implementation of this project.
Research Advisory Committee
■ TTI recently researched High Visibility crosswalks

■ High - Needed for Highway Safety Manual

■ Particularly important and aligned with Mn/DOT initiatives (CSS, Complete Streets, Performance-Base Flexibility in
  Design, Toward Zero Deaths, Multimodal Planning Integration & Sustainability)

■ There is greater need for Pedestrian Crossing treatment

■ This study builds on WSDOT's research which is references in the proposal and would benefit WSDOT in project
  development. I reviewed it as a member of TRB's Pedestrian Committee.
Other
                                                            IV-17
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ [Rating: NR] Rank #9


Item #27:        Data Sources for MOVES
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR        1   1   1    4   2    8

B-06                                                                                         (46) RAC         3   2   6    7   9   18



Standing Committee on Research
■ It is essential that the work prioritize which data elements "should" be gathered locally given limited staff The need for
  this additional data is well documented given the transition to the new MOVES model. It appears that all DOTs would
  benefit from this research effort.

■ This would be helpful to regions with air quality issues in using the newly mandated MOVES analysis tool.

■ Seems like a very large scope.

■ While this research is warranted, it should include greater emphasis on developing regional specific default data inputs
  for State DOTs and MPOs to use within MOVES. Research on how to develop and apply data from travel demand
  models as usable MOVES inputs also needs more emphasis.

■ Looks like a good product

■ This is a mandated emissions model that must be used by all states in 2012 for nonattainment plans and transportation
  conformity. It is very important for the states to understand the data collection requirements due to changes in how
  vehicles are registered, counted and classified to populate the MOVES model and obtain financial resources to
  implement. MPOs, DOTs, State/Local Environmental Agencies will be key users.

■ [Rating: 5] Critical and timely research topic; Provide critical support to states and MPOs in understanding the nature,
  source, and sensitivity of data inputs; States and MOPs will be benefited from this research as they are transitioning into
  EPA's new emissions model in the next 2 years.
Research Advisory Committee
■ This research is very relevant, as many DOTs (including us) will be required to use MOVES for conformity analysis
  starting next year. The concern is the extended time frame (21 months) - hopefully there would be some preliminary
  findings/results that can be used prior to or during the first conformity round.

■ Concur with FHWA Supin Yoder, FHWA Office of Planning comments. Very important project because of known
  challenges in implementing MOVES.

■ new EPA requirement

■ The research objective appears to have some value. However if the states need to be using MOVES2010A in the next
  couple years what will be the value of the research if it takes two years to complete?

■ Not clear on how this would save time or money.

■ NCHRP is the ideal venue for this research as researchers can draw from resources around the nation. The data is
  available or can be generated by researchers. Also, this level of funding is critical to complete this work. Relevant to
  local, regional, state, and federal interests. Much smaller scale efforts are underway at the state level. Researchers are
  expected to draw from this work to develop best practices that can be applied nationally. High probability of success. As
  new areas fall into non-attainment, even more projects will be subject to AQ analysis. The results of this research will
  save time/$ for each of these analysis throughout the country.

Other
■ [Rating: 5] AASHTO’s Standing Committee on the Environment showed strong support for this proposal. In less than 2
  years all state DOTs, except California, will be required to use MOVES2010a instead of MOBILE6.2 for new regional

                                                            IV-18
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

  emissions analyses for transportation conformity – the two-year grace period ends on March 2, 2012. The new model is
  fundamentally different than MOBILE6.2 and state DOTs will need to find new data or ways to use existing data for
  successful implementation of MOVES. The Committee agreed that the research task could be difficult to do at a national
  level, but any information will be helpful since state DOTs will be required by law to use this new emissions modeling
  system. The Committee worked with AASHTO and FHWA to develop this problem statement.


Item #28:        Surface Transportation Security Research
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR            1   2   2    6     6

20-59                                                                                        (46) RAC         2   2   5   12   13   11



Standing Committee on Research
■ These are clearly issues that every state DOT is facing and doing this work at the national level will help eliminate the
  need for each state to duplicate work locally.

■ This is a conglomeration of many AASHTO projects that will benefit emergency management and homeland security
  efforts for DOTs. We have used prior completed items to improve programs, so continued funding is important.

■ [Rating: 5]
Research Advisory Committee
■ The most recent project topics suggest a diminishing return on investment. Has the panel run out of priority issues? 20-
  59(45) "...support the rebuilding of Haiti." ???

■ I would give the problem statement a 5 as an extremely relevant project. The only comment I would add is that the work
  product from the projects should ensure they comply with the standards issued by the Department of Homeland Security,
  including but not limited to the National Incident Management System, the National Infrastructure Protection Plan, and
  the Homeland Security Exercise and Evaluation Program.

■ There is a vested interest in this research that needs to be continued.

■ The DOTs should stay in support roles to eliminate duplicated efforts currently being done by Department of Homeland
  Security.


Item #29:        Calibrated, Mechanistic-Based Models for Top-Down
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR            1        5   7    4

C-04             Cracking of Hot-Mix Asphalt Layers                                          (46) RAC         1   4   1   15   15   9



Standing Committee on Research
■ Top-down cracking is a commonly observed on thick/heavily loaded pavements but is currently not accounted for in
  design. This is a major limitation of the mechanistic empirical design software. Although the problem statement is
  somewhat confusing as written, the overall goal of the research is needed. Currently there is no method to evaluate top-
  down cracking for design, although the phenomenon is well-documented. This project is proposed to provide support for
  that deterioration mode in the MEPDG, which will be highly useful for states.

■ This research could close gap by delivering a model that can be integrated in the MEPDG for full depth asphalt pavement
  design.

■ There is a need for these models since top-down cracking is a significant distress in HMA pavements.

■ Important topic. Major pavement failure mechanism across the country.

■ A complete understanding of all the mechanism of fatigue cracking is critical to the success in building smooth and
  lasting pavement. The proposed models must be calibrated or they will not have any value.


                                                             IV-19
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ [Rating: 5] Addresses an important limitation of the AASHTO Mechanistic Empirical Pavement Design Guide that could
  result pavement designs that will not perform as expected. This limitation is recognized as important by both the FHWA
  and the AASHTO Joint Technical Committee on Pavements. Consider expanding scope to encompass models that are
  equally applicable to asphalt materials produced using both hot-mix and warm-mix technologies.

Research Advisory Committee
■ Ranked by our State Pavement Engineer.

■ Testing should include warm mixes and as many modified binders as possible. These newer concepts could slow down
  the aging process and reduce the top down cracking.

■ This is essential research to implement previous top-down cracking research into the MEPDG.

■ Could be a real benefit for KDOT.

■ 1) Duplicate efforts being done; 2) May prove useful with MDOT's efforts to move towards MEPDG.

■ Good idea, but unclear what's different from the previous study

■ An issue for implementing is being able to know if a given fatigue crack initiates at the top or bottom of the pavement;
  i.e., bottom up or top down cracking. However this research should be done and other studies initiated to find ways to
  practically obtain this information from non destructive testing in the field.

■ Agree with NCHRP review.

■ Need improved model for ME pavement design

■ This project should wait until FHWA studies are completed. We would not gain from this info until we determine that
  we are going to perform pavement design using the AASHTO mechanistic based methods.
Other
■ [Rating: 4] This is an important component of future mechanistic design processes.


Item #30:        Strand Debonding Guidelines for Pretensioned Girders
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR                1    6   6    4

D-03                                                                                        (46) RAC    1    1   3   6   12   11   11



Standing Committee on Research
■ VCITR has done some work on this subject. Guidelines need to be modified for the higher strength concretes, more
  efficient sections, and larger strands.

■ A definite need exists to better understand how much strand debonding is acceptable.

■ [Rating: 5] This is an important topic that requires a rigorous experimental research program. Some bridge owners are
  currently bypassing the debond provisions in the LRFD Bridge Design Specifications, and there is concern that this may
  be creating local weaknesses in bridge girders near support locations.
Research Advisory Committee
■ Article 5.11.4.2 of the LRFD specifications allow strand debonding in non-horizontal row up to 25% and for horizontal
  row up to 40%. Strand debonding according to above article needs to be distributed symmetrically about the center of
  the member. Amount of debonding, in addition to placing them symmetrically, is a limitation forced by strand
  configuration. This problem statement is recommended to be considered by medium priority.

■ Important study.


                                                           IV-20
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ High priority for KDOT.

■ The recent strand debonding research completed by Michigan State University identifies key parameters to minimize the
  damage associated with strand debonding, and the effects on development and transfer length, but not on the existing
  debonding provisions for prestressed beams.

■ Low benefit to MT
Other
■ [Rating: 4] # 3 priority of the Subcommittee on Bridges and Structures


Item #31:        Load Carrying Capabilities of CIR and FDR Recycled
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR                1    6   6    4

D-10             Mixtures                                                                   (46) RAC         1   2   5   16   15   6



Standing Committee on Research
■ Current analysis and design methods involving CIR and FDR are based on empirical methods. There is an urgent need to
  use more mechanistic design methods to take full advantages of the load carrying abilities of CIR and FDR mixtures. An
  almost complete VTRC study on FDR would be recommending a similar study for Virginia conditions. High priority
  research that would help us better understand these materials. VCTIR is already doing some of this work and would be
  well positioned to pursue this project.

■ This data is needed to be able to design these pavements with the MEPDG.

■ It is unlikely that this research would yield significant benefits and/or result in major change in the CIR & FDR industries.

■ Caltrans has done some research in this area and we look forward to a more comprehensive long-term performance study
  to supplement our research.

■ [Rating: 4] With the growing emphasis on in-place recycling of paving materials, well-founded guidance concerning the
  characterization of recycled materials is essential, and this project would address that need. Suggest a change in title to
  "Characterization of the Structural Properties of CIR and FDR Mixtures for Use in Pavement Design."
Research Advisory Committee
■ Ranked by state Pavement Engineer.

■ There is definitely a need to establish structural design information to facilitate the design of pavements which
  incorporate CIR and FDR of AC. It is appropriate for NCHRP and is of nationwide interest. A reasonable probability
  for success exists, and the anticipated return with respect to the cost of the research is high.

■ Important study.

■ Design improvement likely.

■ Hot topic. Can confirm/broaden the active LRRB study

■ This research would result in a design guidelines as well as typical structural design parameters for pavement thickness
  design. This is of interest to MDOT.

■ These are very good technologies with a pressing need for more science, but they are more useful at the local level where
  scientific designs are rare. This could help progress our efforts to expand the use of CIPR and develop a more
  meaningful design process.

■ FDR could assist with poor quality low volume roads.


                                                           IV-21
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ Proposed research does not go far enough. It doesn't talk about a comparison of performance between current hot mix
  methods and in place performance of 100% RAP pavements.

■ This is becoming a more frequently mentioned approach but has no true design procedure in which to evaluate the
  process.

■ This research will help provide better guidance for design of pavements using cold in place recycle and full depth
  reclamation projects
Other
■ [Rating: 2] I think this is understood and if the desire is to put it in mechanistic terms, then a local study of modulus
  values should be done as the materials and methods vary widely across the U.S.


Item #32:        Validating an Endurance Limit for HMA Pavements:
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR            2       6    3    6

09-44            Laboratory Experiment and Algorithm Development                              (46) RAC         1   3   3   16   14   8



Standing Committee on Research
■ The phenomenon of endurance limit in asphalt still needs a lot more study. This makes sense to continue to support this
  work. Considering the complexity of the issue, the funding level is reasonable and the outcomes will be useful to DOTs
  through the incorporation in the MEPDG.

■ This is the absolute last; no more funding. Recommend starting a new project if necessary, with new ideas or findings.

■ To finish the project up

■ National need that requires completion.

■ [Rating: 4] This incremental funding request is consistent with the project panel's original plan to use $500,000 in 2009
  funds and request an additional amount not to exceed $500,000 in 2012..
Research Advisory Committee
■ Ranked by our State Pavement Engineer.

■ Supports the implementation of the ME-PDG

■ 1) Low expected return for effort; 2) The concept of endurance limit may prove useful with MDOT's efforts to move
  towards MEPDG.

■ Low Priority - This would be of limited use to MDOT


Item #33:        Assessing the Effectiveness of Pavement Markings
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR   1    1       3    3   4     5

F-11             under Wet Night Conditions                                                   (46) RAC    4    2   1   7    7   11   13



Standing Committee on Research
■ The concept of developing a pavement marking selection matrix is good, but the problem with any synthesis will be that
  the field is developing rapidly. Any matrix developed would have a limited shelf life, so I don't think this would
  necessarily be the best use of funds. Individual evaluations will offer better assessments of individual products. This
  matrix could be outdated by the time it is published.

■ Always interested in cost effective options for providing wet night visibility in our pavement markings.

■ Should be considered as a synthesis; reduce to $100,000.

                                                            IV-22
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ This is a problem for all states. A synthesis may be the best way to document the state of the art.

■ Is this study more appropriate as a synthesis study?

■ This is an age old question in the industry. We believe there has been a tremendous amount of research, primarily within
  the industry, over the years as demonstrated by the lengthy bibliography. Given the money, we believe this may be more
  appropriate as a synthesis, especially if it included a decision matrix as described.

■ Consider as a synthesis.

■ [Rating: 5] While the title identifies a critical research need of national importance, the listed objectives and proposed
  funding are far short of that need. What is required is a thorough evaluation of the effectiveness, in terms of crash
  reduction and mitigation, of various countermeasures used to improve driver guidance during wet-night conditions. An
  initial effort should be made to evaluate the benefits (in terms of CMF and cost:benefit ratio) of pavement markings that
  are espoused as providing effective guidance during nighttime rain events. Depending on the availability of funding,
  additional phases should be considered to evaluate the impact of RRPMs, active road markers, and delineators, as
  compared to wet-night pavement markings.
Research Advisory Committee
■ If this is conducted, it should be a NCHRP 20-05 Synthesis study.

■ There are many variables that affect the effectiveness of pavement markings under wet night conditions, and a guiding
  matrix would be helpful.

■ Better suited as a synthesis?

■ While the information and recommendations of this research could be implemented by transportation agencies at all
  levels who have wet-night pavement marking visibility issues we have just implemented a pavement marking policy that
  doesn’t consider wet-night pavement markings.

■ This research is important because it gives us valuable data for retro-reflectivity under less than ideal conditions.

■ reduce funding and proceed as a synthesis, very timely given the new technologies that are becoming available.

■ Ohio just undertook a similar, but smaller, study. It will be nice to compare results.

■ Consider conducting as a Synthesis Project

■ This has been done.
Other
■ [Rating: 4]


Item #34:        Determination of Best Practices for Optimal
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR        1   1   2    1   7    5

D-13             Construction Inspection                                                      (46) RAC    3    1   4   4   10   13   10



Standing Committee on Research
■ Particularly timely considering universal reduction in Agency inspection staff and capability.

■ This is good for a synthesis, we will need much more for all the other aspects - construction inspection, materials,
  contract administration compliance, environmental, safety, etc.

■ Unlikely to yield results that will benefit DOT's.


                                                            IV-23
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ Consider as a synthesis.

■ Recommend a Synthesis. A compilation of best practices will be helpful for all State DOTs.

■ [Rating: 5] A timely and important study that will support effective stewardship of scarce highway construction funds.
  Although the basic information gathering that is called for could be accomplished through a synthesis project, successful
  development of the best-practice guidance that is needed will require more evaluation and analysis of the collected
  information than can be accomplished through a synthesis project. Therefore, a $200,000 NCHRP project is warranted
  and appropriate.

Research Advisory Committee
■ Consider conducting this study as a Synthesis.

■ Should be submitted to Synthesis Program.

■ Important study.

■ Better suited as a synthesis

■ While this is needed, the approach should look outside what the states are doing, since we are all struggling with this.
  While this is needed, the approach should look outside what the states are doing, since we are all struggling with this.

■ Interesting topic, but usually more of a resource issue than a risk/reward one. Should be a synthesis project.

■ Conduct as NCHRP Synthesis Project
Other
■ [Rating: 5] The downsizing of DOT’s has made this a critical issue for many DOT’s


Item #35:        Best Practices in GIS-Based Asset Management
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR            2   1    3   7    4

B-01                                                                                        (46) RAC    1    2   3   3   13   15   8



Standing Committee on Research
■ This problem statement highlights a very important research need, however, due to its limited scope, it is recommended
  that it be combined (possibly integrated as a single task) with the more comprehensive B-02 problem statement.

■ Combine with B-02

■ Consider combining B01, B02, B14, B16

■ Agree to combine B-01, B-02, B-14 and B-16

■ It may be more appropriate for the synthesis program. A larger study could combine B02 and B14.

■ Synthesis

■ Combine B01, B02, B14 & B16 for $500,000.

■ Suggest combining B-01, B-02 and B-16, and request $600,000 for funding. Combine and work on B-01, B-02, & B-
  16, first then do the Business case projects by combining B-14 and B-15. Caltrans is already conducting research using
  GIS for asset management of culverts.

■ [Rating: 4] Problem statements B-01, B-02, and B-14 should be integrated into B-16 (B-16 rated 4). They are based on
  the same research recommendation made at a TRB Peer Exchange on GIS and Asset Management held in WV, April

                                                           IV-24
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                    Distribution of Ratings

  2010. The research recommendation estimated a budget for $100,000. Since they do come from the same
  recommendation, they should be combined in some fashion with the $100,000. There is also a similar project funded by
  the Visualization Strategic Initiative with focus on visualization aspects of GIS applications for asset management, while
  NCHRP proposals focus on an implementation model w/milestones for applying GIS and georeferencing transportation
  assets.

Research Advisory Committee
■ Combine B-01, B-02, B-14, B-15, and B-16 into one ~$400k study to develop data management standards. The resulting
  study should provide robust marketing materials for Executives and funding authorities.

■ GIS programs often exist but are separate from Asset Management offices responsible for performance-based programs.
  This proposal has the potential to guide the integration of GIS and Asset Management into cost-effective work flows with
  a potentially high payoff. Should be combined with 2012-B-02.

■ This is written as a synthesis and should be funded through the NCHRP synthesis program.

■ Combine with B-2, B-14, and B-16. Consider benefit of GIS in asset management and best practices. Rank of combined
  studies is 4.

■ It will be beneficial to have a compilation of the best practices in GIS available as a reference tool.

■ Recommend combining B-01, B-02, B-14 and B-16.

■ Seems related to B-02

■ Combine B-01, B-02, B-14 and B-16

■ Recommend combing with B-02

■ If move forward, combine with B-02, B-14 and B-16.

■ Combine B-01, 02, 14, 16

■ This research is most useful to states which already have an asset management system in place. Could use more examples
  of how the GIS-TAMS system will help mitigate costs and manage assets better.

■ Requires more funding.

■ I echo comments that B-01, B-02, B-14, B-15 and B-16 need to be examined for collaboration and/or consolidation.
Other
■ [Rating: 4] SCOP recommends that B-01 and B-02 be combined with a budget of $400,000.


Item #36:        Development of an Unsignalized Intersection Guidebook
                                                                                                          NR    0   1   2    3   4    5
                                                                                              (17) SCOR         1   2   1    3   3    7

G-40                                                                                          (46) RAC      2   2   1   6   13   10   11



Standing Committee on Research
■ This guidebook would have widespread application and is much needed. Note that FHWA is contributing $200K of the
  $600K.

■ We already have a 500 series guidebook on Unsignalized Intersections.

■ This would be a robust guide that would incorporate material from the NCHRP 500 Guide for Unsignalized
  Intersections. The audience would be large. (This was the highest rated project by the Traffic and Safety Evaluation

                                                             IV-25
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

  Panel).

■ Much research already published on topic; unsignalized intersections not part of Arizona's Strategic Highway Safety Plan

■ Reference NCHRP Report 500 for information on this topic.

■ [Rating: 5] The guidebook for unsignalized intersections is expected to have a far reaching impact in improving safety at
  stop-controlled intersections. This comprehensive research should be undertaken as soon as possible.
Research Advisory Committee
■ Unclear how NCHRP Report 500, Volume 5 is inadequate.

■ Would have thought the 500 Guide and other products would be more effective - but apparently this is needed to pull
  info together for designers and decision makers.


Item #37:        Combining Individual Scour Components to Determine
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR            4        2   5    6

E-06             Total Scour                                                                  (46) RAC         2   4   5    9   14   11



Standing Committee on Research
■ It is agreed that by overstating total scour for a structure results in a waste of resources. This project seems to have an
  extremely high payoff potential (one of the highest among all of those I have reviewed this year).

■ We have significant issues with scour and head cutting and this research could prove beneficial.

■ This project has the potential to be very beneficial, since at present each component of scour is added together to obtain
  the total scour depth. This has always been thought of as being very conservative and wrong, but has been put forth as
  being safe and conservative. Research done at the Georgia Institute of Technology has shown that pier scour occurs first
  and is followed by contraction scour, with the total scour being the larger of either pier scour or contraction scour. This
  is important, since it would reduce the predicted scour depths for new structures and also allow for evaluation of scour
  critical bridges to make sure that they are scour critical. We would rate this project fairly high, although the success of
  the project will largely depend upon who ends up doing the research. Incidentally, this research topic has been rated
  fairly high amongst Hydraulic Engineers since 1996.

■ The Urgency/Payoff section of this problem statement is well-written and reflects our opinions on the subject.

■ This duplicates a lot of other research already going on at TRB. It is not as necessary IMO.

■ [Rating: 5] This study should provide the basis to resolve real concerns that current scour estimation techniques are
  overly conservative. The focus is national in scope, practical in application, and will be of great benefit to the
  transportation community.
Research Advisory Committee
■ Literature review in problem statement did not mention very relevant research by USDA ARS.

■ The problem statement is an important research project and is recommended to be considered as a medium-high priority
  research. It seems that NCHRP Project 24-27(01, 02 and 03) is covering some part of this problem statement and this
  proposal should be rewritten based on this ongoing research project.

■ NCHRP 24-27 (Evaluation of Scour Research) concludes that our current approach of adding scour components is overly
  simplistic, that the components are mixed and interrelated. This project represents a valuable step forward in predicting
  bridge scour.

■ should be done on case by case.


                                                             IV-26
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ LRRB Topic

■ Need better guidance on combining scour components. Very little data is presently available on this subject. Large scour
  totals are a product of a system that could use refinement. Perhaps this is part of that needed refinement.

■ Scour research has proven to be very unreliable. For the most part, adding the component scour calculations, really
  makes no difference.


Item #38:        Project Planning and Scoping to Improve the Execution
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR            2   1    5   5    4

B-10             of Highway Projects                                                         (46) RAC         2   4   3   11   14   11



Standing Committee on Research
■ The first and last bullets, corresponding to Tasks 3 and the latter part of Task 6--best practices and development of tools--
  are the most critical. This should be illustrated with real examples as opposed to processes. The proposers correctly
  describe the root challenge: after a project is programmed, its scope can be fundamentally altered.

■ Proposed budget might be high.

■ Suggest a synthesis of practice

■ Consider reducing to 400K

■ ADOT basically already does what this research is suggesting; Front End Planning (i.e. project scoping) prior to
  inclusion of projects in a STIP. However, planning and development are complicated and time consuming. Research to
  improve any part of the process could be beneficial.

■ Improved project scoping/planning for transportation projects is essential for cost efficiency, minimizing project cost
  overruns, etc. This is timely research as transportation funding is becoming more limited, and scoping efficiencies will
  maximize funding dollars.

■ [Rating: 4] This area is important; however, as written and without reconciliation of the comments with the submitter
  response that cost estimation and TRB cost estimation reports would be complemented for project development phases of
  planning and environmental review, the rating and funding amount is not seen as a particular need. Submitter responded
  cost estimation was not a focus of the research and planning and scoping is viewed differently than in FHWA’s planning
  and environmental processes.
Research Advisory Committee
■ Rating reflects negative reviewer guidance.

■ Important project.

■ Great next step high priority;

■ Although this research has merit it is redundant with the FHWA "every day counts" initiative.

■ Highway probability of returning a framework usable on all highway projects.

■ ODOT utilizes our own established scoping processes.

■ Finding the right balance for adequate scope definition is a perennial question. We've looked at this a number of times at
  WSDOT, and it seems we all understand what the best practices might be, but that there are certain fiscal and political
  realities that affect our ability to fully practice them.
Other

                                                            IV-27
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ [Rating: 5]


Item #39:        Improved Corrosion Inspection Techniques for Ducted
                                                                                                          NR   0   1   2     3   4    5
                                                                                              (17) SCOR   1        1   3     3   6     3

F-09             Strands for Cable Stayed and Post-Tensioned Concrete                         (46) RAC    5    1   1   10    7   11   10

                 Bridges
Standing Committee on Research
■ This proposal focuses on NDE techniques for assessing structural components in a bridge, an area lacking adequate
  inspection techniques. This is an area in need of research since traditional visual inspection of these components is
  ineffective. VDOT has historically supported this area of research through in-kind contributions, recognizing the need
  for research in this area. The project scope and costs are reasonable. There is evidence of a growing problem with
  grouted post-tensioned structures developing corrosion, particularly in locations where bleeding of grouts has resulted in
  voids within PT ducts. Nearly all grouts used prior to 2000 exhibited this problem. The voids tend to be concentrated at
  anchorages and diaphragms that prevent direct inspection. Full cables failures have been reported in multiple states
  where such structures have been in service for 10 or more years.

■ Presently this is an area that is severely lacking in development. Owners are in great need of tools to evaluate these types
  of structures. Presently only destructive methods exist.

■ Important problem that needs to be addressed.

■ Our PT strands are primarily for serviceability and relatively small in number. Currently no known issues here, but could
  be much bigger problem nationwide.

■ This research is overdue and needed.

■ [Rating: 5] There are no proven technologies to adequately assess the health of wires and tendons in prestressed concrete
  bridges and cable stays. Recent failures in relatively new structures reinforces the need for new technology in this area.
  This project addresses that need.
Research Advisory Committee
■ Although this is important work nationally, AK has very few structures of these types.

■ Mississippi has cable stay bridges. It is imperative that the cables are inspected to detect corrosion before there are safety
  issues. It will be beneficial if improved technologies can be identified or developed to inspect and characterize corrosion
  on embedded wires and strands and thus prevent failure of these from threatening the public safety or causing major
  repairs and rehabilitation.

■ Important to some states; little impact for Montana.

■ Also ranked 0, maint.

■ Inspection for corrosion important especially in coastal environments
Other
■ [Rating: 2]




                                                            IV-28
PART IV: Summary of Comments                                                                                                 13-Apr-11
Reviewer         Comments                                                                                   Distribution of Ratings



Item #40:        Crash Experience Warrant for Traffic Signals
                                                                                                            NR   0   1   2    3   4    5
                                                                                                (17) SCOR        1            6   8    2

G-07                                                                                            (46) RAC    2    3   2   1   19   9    9



Standing Committee on Research
■ Unclear why NCHRP 491 didn't address this issue. Why did we invest in NCHRP 491 if NCUTCD did not carry results
  forward to MUTCD? How would this differ from NCHRP 491?

■ Update MUTCD crash warrant with new Highway Safety Manual procedures.

■ This research is needed in order to integrate the Highway Safety Manual into the traffic signal warrant process.

■ Good topic, but the budget seems be on lower side if we want a good research outcome.

■ There is limited data to support the current warrants and Crash Reduction Factors. Suggest that the study also look at
  warrants for Roundabouts.

■ [Rating: 4] This is a worthwhile topic, but the $100k estimated funding is WAY too low for what it would take to
  actually produce something that’s useful.
Research Advisory Committee
■ need to improve this warrant

■ Research has been done for signal warrants except for the crash experience. In their discussions, the Signals Technical
  Committee seeks to modify or validate the warrant based upon research similar to the Pedestrian Warrant. The
  MassDOT Highway Division strongly supports this research.

■ Much-needed research

■ Previous NCHRP work produced an unworkable and overly complex approach. Not sure if a 100K project will be able
  to really tackle and deliver this. Actual crash history and details regarding 'treatable' or preventable by signalization still
  mandatory and case by case applied.

■ Given the recent focus on the AASHTO Highway Safety Manual (www.highwaysafetymanual.org) this additional
  research that would attempt to align the MUTCD Warrant 7, Crash Experience, with the Highway Safety Manual would
  be very worthwhile. Since other intersection control devices, such as roundabouts, may more effectively address crash
  experience, the research should include whether it would be appropriate to include an alternatives analysis of other
  intersection control types as part of the Standard for Warrant 7, Crash Experience.


Item #41:        Guidelines for Design and Shielding of Bridge Piers
                                                                                                            NR   0   1   2    3   4    5
                                                                                                (17) SCOR        2       1    3   7    4

C-03                                                                                            (46) RAC         3   1   3   17   12   9



Standing Committee on Research
■ Among roadside safety related problem statements, this was the #1 priority of the AASHTO Technical Committee on
  Roadside Safety

■ Current standards appear to be overly conservative and research could result in reduced costs for shielding measures.

■ [Rating: 5] There is considerable concern over this issue that warrants funding this research, but the effort needs to be
  focused by the project panel. Three major objectives are cited and to address them all would require more resources than
  requested. Addressing the crashworthiness (TL-5/6) of truck barriers might be the most beneficial objective from a safety
  perspective considering growing truck traffic & disparities with other vehicles. Funding may be high.


                                                              IV-29
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

Research Advisory Committee
■ Recently proposed changes to the AASHTO Bridge code have further increased the design loads for bridge pier
  collisions. This research could provide a more rational approach to this extreme event.

■ Safety improvements in cars including airbags is going to improve fatalities associated with any accident over time. One
  of the challenges designers have been facing is rapidly changing truck and car sizes and weights. It is unclear how it is
  possible to develop a guideline for designers when impact of changes in vehicles are hard to predict accurately for future
  accidents.

■ Essential - This is a major National Issue and must be resolved.

■ Would be useful.

■ Important topic because current bridge pier design loads and protection are not well understood and verified

■ First 3 research objective bullets have a reasonable chance for success and are most important. Suggest eliminating
  "head slap" tasks.
Other
■ [Rating: NR] Rank #3


Item #42:        Scour at the Base of Retaining Walls and Other
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR            1   3    4   3    6

E-01             Longitudinal Structures                                                    (46) RAC         1   3   7   16   10   8



Standing Committee on Research
■ State DOTs spend significant time and funds repairing the scour of longitudinal structures. This research effort is a high
  priority.

■ t appears that this proposed research is nothing more than a refinement of the abutment/contraction scour equations for a
  vertical wall abutment. The only items that would make this "new" are: 1) that the length of the abutment wall is short,
  whereas a retaining wall could be fairly long (i.e. the short contraction approach using the results of the vertical wall
  abutment might not be applicable); and 2) when the retaining wall is placed approximately perpendicular to the flow then
  the flow/scour parallel to the wall would need to be determined. Neither of these "new" items would appear to be that
  complicated to come up with proper scour equations for. We would rate this project fairly low.

■ This has come up over and over and now needs to be put together as an amalgamation of all the procedures out there, into
  one practical approach.

■ [Rating: 4] Although FHWA is currently updating HEC-18, current research and knowledge is still lacking in this area.
  This study will address an urgent need to address scour on longitudinal structures, especially the impinging flow
  component can create severe scour.
Research Advisory Committee
■ Flume studies are typically performed with uniform sand. This does not represent typical watercourse geomorphologies
  (particularly in the smaller, well graded, cobble/boulder river basins in the northeast). The resulting scour equations
  trend toward the conservative side and create more problems for the designer than they solve. In addition, a more
  practical solution for retaining walls adjacent to watercourses is to design and construct proper revetment systems that
  prevent migration of the watercourse towards the wall.

■ LRRB Topic

■ This may be a topic of interest nationally, but we do not construct retaining walls on shallow foundations in areas of
  potential scour.

                                                           IV-30
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings

■ NYSDOT has recently had problems in these areas. Scour estimation anywhere needs much better science behind it, as
  it is an expensive and extensive problem.

■ Due to urban right of way restrictions, planners & roadway engineers are committing projects to utilization of retaining
  walls & noise barriers in proximity to streams with potential scour issues. Hydraulic Engineers need better tools to
  predict longitudinal scour.

■ Concern that MSE walls will be main thrust of this research and ODOT does not use MSE walls adjacent to streams.

■ Would like information on the magnitude of the problem (how many failures of retaining walls have occurred from
  scour? While there is definitely a need to evaluate this issue, the project approach (proposed to be primarily a lab study -
  I think that analysis of full scale field cases should also play a significant role in this study - such cases could be obtained
  from state DOT's through a survey and follow-up calls) may be a bit weak. The cost is also quite high - may be best to
  do a first phase for less funding - once that is completed, a follow-up study should be conducted to better focus on key
  issues that affect prediction accuracy.

Other
■ [Rating: NR] Rank #6


Item #43:        Evaluation of Long Term Performance of Stormwater
                                                                                                           NR   0   1   2    3   4    5
                                                                                               (17) SCOR        1   1   3    3   3    6

B-12             Controls                                                                      (46) RAC    1    2   1   7   13   11   10



Standing Committee on Research
■ The comments of the NCHRP reviewer summarize exactly the advantages and problems associated with this problem
  statement. Much of what is proposed here is duplicative with what has already been done. What continues to be a
  problem is the lack of understanding (cost, performance, etc.) related to maintenance of BMPs. If the proposal can be
  redirected slightly such that this is exclusively what is addressed through the research, it would be extremely beneficial to
  all DOTs.

■ This is a BIG environmental and safety issue.

■ A lot of research has been done; these issues are best resolved at the local level.

■ There is no explanation of exactly what data will be collected or over what period of time it will be collected.

■ Very difficult to assess.

■ This something that ADOT and other DOTs have been struggling with. How to comply with regulations geared at
  municipalities (MS4s) with BMPs developed for MS4s.

■ Installing Best Management Practices that are maintenance intensive or that require too much on-going maintenance to
  sustain the expected long term performance is a big problem for DOTs.

■ [Rating: 5] Looking at BMPs as a function of maintenance. Payoff would be highly beneficial.
Research Advisory Committee
■ This study needs to focus on maintenance of BMPs needs in context of effective Asset Management program.

■ Very little information on a topic that could heavily impact project costs.

■ Modify proposal to help DOTs collect necessary data

■ This is something that is really needed. It would evaluate BMP's in reference to highway (linear) projects so we can
  identify the more effective BMP's for field use.

                                                             IV-31
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ Future guidance for selection and design of BMP systems could have immediate impact.

■ Life Cycle Cost and efficiencies are important

■ Although there are studies that address many of the research objectives identified in this proposal, a new study that
  updates existing information is probably warranted. Long-term BMP monitoring studies and careful maintenance record
  keeping may pay bigger dividends, though. The proposal suggests research based on field data collection or literature
  search. While performance of some BMPs (e.g., retention ponds) is relatively well-known, there are gaps in information
  that will not be addressed with a literature search.

Other
■ [Rating: NR] Rank #2

■ [Rating: 5] This research proposal is one of SCOE’s highest priorities. This research would be beneficial to
  environmental, design, hydraulic/hydrology, maintenance and operations engineers. The selection, implementation and
  maintenance of effective stormwater BMPs is critical to meeting the requirements of the Clean Water Act. Current
  stormwater requirements and future retrofit requirements will require state DOTs to invest heavily in BMPs. This
  research will complete a cost benefit analysis that will enable engineers to select practices that will be most effective over
  the long term. As more BMPs are implemented maintenance is a major concern. This research will investigate the life
  cycle of the practice. This research could potentially expand the list approved BMP’s by EPA enabling DOTs to use the
  most cost effective practices.


Item #44:        Developing Environmental Performance Measures and
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR        1       4    3   4    5

B-07             a Framework and Methodology for Incorporating                                (46) RAC         4   1   6   10   14   10

                 Environmental Performance Measures into
                 Performance Management Programs
Standing Committee on Research
■ Environmental performance measurement is an important topic in transportation/environmental circles in recent years.
  This research has great potential for making it easier for DOTs to navigate the difficult task of performance measure
  implementation. It is recommended that this problem statement not be acted on until NCHRP 20-24(37) is complete. Not
  following the three tiers previously identified, would undermine the earlier work done by this group.

■ This has potential to be part of "national level performance measures" - lots of debate on metrics, but it needs to be
  addressed.

■ Problem statement is difficult to follow. It's unclear what environmental measures would be included. Stormwater,
  greenhouse gas emissions, and recycling are important but other issues may be equally or more important. Seems like a
  lot of money for this type of project given the anticipated payoff and prospects for implementation.

■ Of great importance to ADOT and other DOTs

■ This proposal is too vague to lead to a usable conclusion. The proposers should rewrite the proposal making it more
  specific and resubmit it. Statement overlooks major national work (NCHRP 20-63A/B).Caltrans is currently developing
  a pavement management system.

■ [Rating: 5] Research in developing environment performance measures is timely given the new CEQ guidance on
  mitigation. However, the approach needs to take care not to overly focus on Tier 1 measures. Appropriate consideration
  of Tier 2 and Tier 3 measures is essential.
Research Advisory Committee
■ Agree with FHWA that "no thought seems to be invested in the justification of purpose/utility of the measures"
  Performance measures are most effective when they reflect state-specific goals established by State leaders.

                                                            IV-32
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ The Problem Statement addresses a high-priority environmental research need identified in NCHRP 20-24(37). The
  topic is timely and the approach is logical.

■ builds upon NCHRP 20-24 expand to include environmental performance measures

■ any effort to standardize and estimate emissions is valuable

■ This is an area that Congress is looking for DOT's to improve in. Fully expect to have increased performance measures
  imposed on DOTs in the future. This additional work is warranted to outline what would be acceptable performance
  measures.

■ This is a very challenging project to conduct and close attention must be paid to the scope of the work to ensure it
  addresses national application and that implementation will be feasible (in workload and data needs). It would be useful
  if the product helps create a universal language while reflecting the current local efforts to address environmental
  performance measures (which currently use varied language and are difficult to compare).
Other
■ [Rating: 5] This proposal is SCOE’s highest priority and vital to all state DOTs as performance measures are currently
  being mandated across the nation by legislatures and executive offices. It is imperative to have a framework developed
  for environmental performance measures that can be used by all state DOTs. SCOE would like to see the proposal
  expanded to collect and do a comparative analysis of all information from the states regarding environmental
  performance measures, but focus the development of national measures to stormwater, GHGs and recycling. This can be
  accomplished within the existing budget. The Committee lends their strong support to the research and its goal of
  identifying and implementing effective measures as the results are believed to be beneficial to all state DOTs.


Item #45:        Characterizing Slab/Base Friction for Improved
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR                1    6   9    1

D-02             Concrete Pavement Designs                                                   (46) RAC         3   2   3   18   16   3



Standing Committee on Research
■ Since the interfacial bond is the most difficult parameter to control in the field or asses the bonding condition throughout
  the pavement life, it would be best to perform a sensitivity analysis first. There are some works done along this line by
  Hall and Beam (2005) and Guclu and et al (2009).

■ An important component to the performance of PCC pavements.

■ Research needs to be completed to facilitate full utilization of the MEPDG.

■ There may be other solutions to inhibit Slab Cracking such as Macro Fibers.

■ This is one of the highest priority issues related to the nationwide implementation of Mechanistic-Empirical Pavement
  Design Guide. This item was flagged by Caltrans and the University of California Pavement Research Center as one of
  the most important enhancements needed to characterize concrete pavements which is why Caltrans initiated this request
  to AASHTO and the AASHTO Joint Technical Committee on Pavements agreed to make it one of its highest priorities.

■ [Rating: 4] A high priority need in relation to the implementation of the AASHTO Mechanistic Empirical Pavement
  Design Guide.
Research Advisory Committee
■ Many variables can contribute to friction loss between base material and concrete slabs. Some not included in the
  problem statement are freeze and thaw cycles and water infiltration under slabs that wash away fines which produce
  voids.

■ Need to consider sensitivity of pavement performance to interface friction


                                                            IV-33
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer          Comments                                                                              Distribution of Ratings

■ Supports the implementation of the ME-PDG

■ Potential for design improvement.

■ This problem statement was ranked 4 out of 12 reviewed by AASHTO Subcommittee on Materials. Even so, the
  proposal would be of limited use for MDOT.

■ We know that slab/base friction can impact pavement performance. We do not know what frictional characteristics we
  achieve at the interface, nor what the appropriate level should be. This issue is further complicated with the use of
  permeable base.

■ Important to concrete pavement design in ME procedure

■ A concern is availability of data.

■ Need this to help implement the MEPDG
Other
■ [Rating: 5] Important Study. However, it should consider that the MEPDG is not successfully predicting performance
  without varying friction with time. In addition, the project should evaluate “true” friction conditions and identify
  modeling issues. A test method was developed under a FHWA-led effort (in conjunction with HIPERPAV development)
  that characterizes slab/base friction. This information should be acknowledged and reflected in the problem statement as
  it has a large bearing on the scope.


Item #46:         A Guidebook for Design Contract Administration for
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR                3   3    7    4

D-19              Transportation Projects Delivered Using Integrated                        (46) RAC    2    3   2   7   14   14   3

                  Project Delivery
Standing Committee on Research
■ timely topic.

■ It is timely and very important.

■ There is a good chance that something useful could develop from the research. Potentially there could be a very good
  return

■ This research would be very beneficial for project development divisions/bureaus.

■ We are currently trying to have our FHWA partners as part of Every Day Counts allow the use of more alternative
  delivery on projects.

■ Having clear expectations for quality of design products is always important, but more so under innovative delivery
  methods where control of the design is transferred to another party. This study will collect best practices and develop a
  guidebook to assist DOTs in implementing these methods.

■ [Rating: 4] Proposed project would provide a valuable resource to support effective project delivery.
Research Advisory Committee
■ FHWA EDC Initiative

■ Recommend for synthesis first.

■ NCHRP 10-83 just started - look at overlap


                                                           IV-34
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Guidebook could be very useful for most DOTs since it deals with emerging practices.

■ Like guidebooks

■ With more Design-Build projects being done here at MDOT, this would be some good information to have.
Other
■ [Rating: 3] There is a need for guidebooks on the various procurement processes particularly CMGC but there limited use
  makes it a lower priority.


Item #47:        Cost-Benefit Metrics for Behavioral Highway Safety
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR            2   1    3   10   1

G-39             Countermeasures                                                             (46) RAC    1    1   1   9   14   14   5



Standing Committee on Research
■ Support the need for better injury metrics, but our experience with trauma registries suggests that that approach is labor
  intensive and does not yield high match rates. Perhaps EMS databases might be promising. Reduce the cost and
  concentrate on EMS data

■ This could be helpful. We do not have good values of the effect of behavioral countermeasures.

■ The proposed research could be helpful in determining the best allocation of safety funds, i.e. between hard safety
  improvements and soft behavioral countermeasures.

■ Continuation of NCHRP Report 622 Effectiveness of Behavioral Highway Safety Countermeasures

■ This research will establish effectiveness metrics for the countermeasures found “likely” but not “proven” to be
  effective. The results will expand our toolbox of behavioral countermeasures that we might be willing to try and that
  could prove to be effective.

■ [Rating: 4] There is a high need to establish cost-benefit metrics for effective behavioral countermeasures that are not yet
  proven. These metrics will benefit state and local agencies and will allow them to prioritize programs and projects. This
  will add to the information in the CMF Clearinghouse. However, this research problem statement's objective should be
  further developed with more detail.
Research Advisory Committee
■ Need a method for comparing effectiveness of behavior against infrastructure countermeasures. One issue is establishing
  an appropriate "lifetime" for behavioral countermeasures.

■ Valuable study.

■ Important to National TZD

■ Probably should utilize a stacked (3E/4E) development of benefits/cost that consider the educational, enforcement,
  adjudication and emergency response elements associated with the behavioral programs. Duration of effectiveness,
  refreshing of messages, and role that adjudication plays will all be important.

■ Needed for 2nd edition of HSM.




                                                            IV-35
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings



Item #48:        Effective Management and Use of Transportation Asset
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR            4   2    1   5    5

B-02             Data With GIS                                                              (46) RAC    1    1   6   4   11   11   11



Standing Committee on Research
■ This appears to be an excellent research proposal that is long overdue. It is agreed that GIS has been underutilized for the
  purposes of asset management. As outlined, this proposed research effort has the potential to be extremely beneficial to
  VDOT (and it is assumed many other DOTs). The estimated cost to perform this work seems far too low.

■ Only slightly different than B-14??

■ See FHWA's comments on duplication.

■ Combine with B-01

■ Consider combining B01, B02, B14, B16

■ Agree to combine B-01, B-02, B-14 and B-16

■ The first two objectives could be combined with B16 and the third with B14.

■ Agree with FHWA that this work can be done more efficiently (and cost-effectively) through B-14 and B-16.

■ Combine B01, B02, B14 & B16 for $500,000.

■ Suggest combining B-01, B-02 and B-16, and request $600,000 for funding. Combine and work on B-01, B-02, & B-
  16, first then do the Business case projects by combining B-14 and B-15. Caltrans is already conducting research using
  GIS for asset management of culverts.

■ [Rating: 4] Problem statements B-01, B-02, and B-14 should be integrated into B-16 (B-16 rated 4). They are based on
  the same research recommendation made at a TRB Peer Exchange on GIS and Asset Management held in WV, April
  2010. The research recommendation estimated a budget for $100,000. Since they do come from the same
  recommendation, they should be combined in some fashion with the $100,000. There is also a similar project funded by
  the Visualization Strategic Initiative with focus on visualization aspects of GIS applications for asset management, while
  NCHRP proposals focus on an implementation model w/milestones for applying GIS and georeferencing transportation
  assets.

Research Advisory Committee
■ Combine B-01, B-02, B-14, B-15, and B-16 into one ~$400k study to develop data management standards. The resulting
  study should provide robust marketing materials for Executives and funding authorities.

■ GIS programs often exist but are separate from Asset Management offices responsible for performance-based programs.
  This proposal has the potential to guide the integration of GIS and Asset Management into cost-effective work flows with
  a potentially high payoff. Should be combined with 2012-B-01.

■ Combine B-01, B-02, B-14-16 into one project. These all came from the same conference but they all overlap, didn't
  they talk to each other at that conference?

■ Combine with B-1, B-14, and B-16. Consider benefit of GIS in asset management and best practices.

■ Would create a series of benchmarks that we could use to evaluate our GIS efforts against those of other states and allow
  us to actually calculate an “industry standard” return on investment (ROI) for our GIS initiatives.

■ combine with B-01

                                                           IV-36
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ This seems to be almost a duplicate of B-16.

■ Recommend combining B-01, B-02, B-14 and B-16.

■ Related to B-01

■ Combine B-01, B-02, B-14 and B-16

■ Recommend combining with B-01 with a funding level of $400,000

■ Combine with B-01, B-14 and B-16.

■ See comment B-01

■ This research covers a broad spectrum of issues related to asset management in GIS and would probably result in a wide
  range of national level information.
Other
■ [Rating: 4] SCOP recommends that B-01 and B-02 be combined with a budget of $400,000.


Item #49:        Effect of Work Zones on Crash Risks and Guidance on
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        1   3        4   6    3

G-45             Countermeasures                                                             (46) RAC    1    1   3   4   11   19   6



Standing Committee on Research
■ BC-There is a need for a more focused scope here. Task 2 would identify gaps in understanding characteristics and
  causal factors for work zone crashes and injuries and fatalities involving motorists and involving workers then it will be
  decided what countermeasures will be evaluated. I would prefer more details now.3: YJK - There were many studies
  about work-zone related crashes. A synthesis project might be enough. What new insights we can get out of this project
  is not clear. This can be combined with G-44.

■ In order to curb the number of work zone fatalities it is imperative to understand the root causes.

■ Prefer this to G-44

■ G-44 and G-45 might be combined and re-organized.

■ Much research already published on topic

■ Contact Caltrans for information on a current research project on Work Zone Speed.

■ [Rating: 5] This Problem Statement was written by FHWA. Having a greater understanding of work zone crash risks and
  causation are vital to improving work zone safety. The results of this research will enable agencies to design safer work
  zones.
Research Advisory Committee
■ The proposed research statement is going to cover a very important topic; however, there have been several studies
  launched by federal and state agencies the last few years, and it would be beneficial to look into these studies and their
  findings prior to conduct this research. The proposed research is recommended to be considered.

■ NCHRP-581, Design of Construction Work Zones on High Speed Highways gives many summaries of what various
  states are using. However, it doesn't indicate which designs are working the best. It would be nice to see a national
  summary on cross-over designs and some guidance as to which are working for given volumes and speeds.

■ Substantially similar to G-44.

                                                            IV-37
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings

■ PS was submitted by Sue Groth through the technical committee that she chairs.

■ could be useful in determining work vs. user risks and priorities


Item #50:        LRFD Calibration of Differential Bridge Support
                                                                                                           NR   0   1   2    3   4    5
                                                                                               (17) SCOR            1   3    5   4    4

C-06             Settlement                                                                    (46) RAC    1    3   1   6   16   12   6



Standing Committee on Research
■ Important for validating design.

■ The objective of this project is to develop serviceability guidelines and criteria for limits on absolute and differential
  settlement imposed on a bridge superstructure. While various states have requested that limits be imposed on settlement
  during design of bridges, most of these people are structural engineers who want to try to design the superstructure with
  some flexibility built in to accommodate small deflections. We believe that this project is going to be very difficult to
  accomplish due to the fact that the structural engineers are going to want to place constraints on the settlement based on
  the behavior of reinforced concrete, where as the geotechnical engineers are going to provide estimates of settlement
  based on soil parameters and loading conditions. Since there are a wide variety of unknowns on the geotechnical
  variables that influence settlement, the two approaches to settlement are going to be difficult to reconcile. We have rated
  this project low to moderate — low because it is probably not going to turn out the way everyone expects and moderate
  because we should probably keep our eye on it so that we know what is going on.

■ [Rating: 5] Although the project title does not fully agree with the project scope, it is an important project in that it
  addresses an important design and performance issue in bridge engineering that has not been fully addressed in the
  current state of practice.
Research Advisory Committee
■ Differential settlement may lead to added superstructure demands. The research should focus on structural efficiency.

■ The proposed research objective is to develop bridge foundation settlement criteria and predict the effects of differential
  settlement on long-term performance of a bridge. Bridge foundation settlement is a function of many factors, including
  soil, structure type, structure settlement limits and design mandate and developing settlement criteria in a way that would
  cover all types of bridge structures and foundation condition and type will be a challenging task.

■ Not similar to MDOT's pile driving research, but important for determining appropriate design criteria.

■ Low benefit to MT

■ Important topic but problem statement is not well developed. There has not been a study on this subject since the early
  1980's. Not the most pressing need in LRFD calibration for foundation design

■ Recommend a change in the title to match the scope of work.

■ This one is a bit unclear to me. It appears that the focus of this study is to estimate the tolerance of the bridge structure to
  differential movements caused by foundation settlement. If that is the case, this is really a structural project. It does not
  appear that this study will delve into the accuracy of geotechnical estimates of differential and total settlement of the
  foundation.
Other
■ [Rating: 4] # 4 priority of the Subcommittee on Bridges and Structures




                                                             IV-38
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings



Item #51:        Use of Multiple Forms of GPS Data for Understanding
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR        1   1   3    1   8    3

B-11             Travel Behavior                                                            (46) RAC    1    3   2   6   11   17   5



Standing Committee on Research
■ The most important deliverable will be a list of the "right" questions that states/MPOs should ask GPS vendors when
  purchasing travel data.

■ The use of GPS data is maturing at a fast rate, and the objectives in this proposal seem to be competing with private
  industry.

■ This is a very good idea and would be a valuable input to travel demand modeling. The main benefit being the vast
  amounts of data available for the low cost. The only concern is how would the study be able to differentiate nationwide
  and state travel? State travel patterns may be quite different than the nationwide average.

■ The use of GPS methods is becoming one of the most reliable means of in collecting travel behavior data. Research to
  improve methods will improve cost-effectiveness.

■ Caltrans is currently piloting smart phone applications for travel surveys.

■ [Rating: 5] GPS data combined with Computer Assisted Telephone Interviews (CATI) has become an emerging method
  for survey data collections and analysis. The project will be timely in providing guidance for MPOs and State DOTs to
  collect or analyze their GPS data. Other benefits of this project could include development of transferable parameters or
  adjustment factors to those parameters derived solely from the existing traditional survey methods.
Research Advisory Committee
■ This research holds promise to significantly advance the understanding of travel behavior.

■ This is a very timely topic, with numerous potential methods for collecting and utilizing GPS data to track travel.
  Although our current Massachusetts Travel Survey has an "opt out" GPS component (500 households) as a percentage of
  all surveyed households, this method is expensive, requiring incentive payments to get people to participate. Further
  research and recommendations for passive GPS data collection would be very useful going forward.

■ Moderately useful. Reason for the 3: 1)evolving nature of GPD devices will render obsolete fairly quickly 2) hard to see
  how data collected for traffic operations purposes will help directly understand travel behaviour since some link to the
  individual is necessary.

■ Definitely has a national impact and is a current problem. Beneficial to the department in determining alternative
  methods of collecting travel time information for cost benefit analysis of projects. Also might be used for origin -
  destination studies on a limited capacity. If this research provides a more cost effective method of capturing travel data
  (than using license plate readers) it will greatly enhance our efficiency and reduce our data collection costs.
Other
■ [Rating: 5]




                                                            IV-39
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings



Item #52:        Innovative Methods to Obtain Pedestrian and Bicycle
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        1   1   2    4   7    2

G-38             Volume Data                                                                 (46) RAC    1    2   3   6   12   11   10



Standing Committee on Research
■ IOK - This research can fill a major gap for multimodal planning and decision making. With the very fragmented
  pedestrian and bicycle networks, however, there is significant latent demand. I.E. existing walking and biking trips are
  minimal because there are no safe accommodations for these trips. This research should also include the development of
  methodologies to estimate pedestrian and bicycle volumes should walking and biking facilities be provided. Limited
  examples already exist in the literature. One concern is inputs required to the methods developed by this project. For the
  methods to produce accurate volume data, I expect quite detailed inputs are needed to enter into the methods. If those
  inputs are not already in agencies' databases or are difficult to collect, collecting those input data requires quite
  considerable resources and agencies are not likely to do so. Moreover, collecting the inputs is needed every time when
  we want to obtain volume data. Thus, if the inputs are not already in the databases or are difficult to collect, the
  developed methods will not be implemented in practice.

■ A better method to estimate pedestrian and bicycle volumes would be beneficial to develop needs as well as improving
  safety. This research must consider the differences between rural and urban areas.

■ Important to estimate demand for bike-ped facilities.

■ We have no volume count data yet our Bicycle Policy, Roadway Design Guidelines, and Traffic Engineering PGP 480
  make reference to need for bicycle and/or pedestrian traffic data in our decision-making, e.g. anticipated bicycle usage; if
  appreciable bicycle traffic exists or is anticipated; intersections with heavy bicycle or pedestrian volumes; when bicycle
  traffic is prevalent or expected to be infrequent; discussion on pedestrian and bicycle traffic required for review of
  roundabout designs. And volume data may become a higher priority as funding programs become more performance-
  based.

■ [Rating: 4] This research has potential for payoff. Exposure data would allow provision and improvement of pedestrian
  and bicycle facilities where the need is greatest and development of better predictive methods for pedestrian and bicycle
  crashes for the AASHTO Highway Safety Manual. Emphasis should be placed on exposure rates, volumes, etc. at
  intersections.
Research Advisory Committee
■ There is great interest in having better bicycle and pedestrian data. Some emerging technologies exist. It is difficult to
  balance these needs with other transportation reporting requirements.

■ Could be helpful in making cyclist and pedestrian volume data more readily available to transportation analysts. Agencies
  use (or could use) this data for three purposes: 1) to use design or traffic engineering guidelines that refer to levels of
  pedestrian or cycling usage; 2) to gauge how volumes of cycling and/or walking trips in a city or specific district are
  changing over time (growing? diminishing?);3) to justify design provisions that are sometimes criticized as wasteful on
  the grounds that “no one walks there” or “no one will ride there.” Technology for counting pedestrians and cyclists is
  getting better all the time. However, better techniques for estimating 24-hour and annual volumes on the basis of short-
  duration (e.g., 8-hour) counts would be helpful.

■ not enough detail.

■ Improved methods are needed.

■ This research will be beneficial to the department. Bike and Pedestrian information is not a federal requirement for
  HPMS reporting (yet). We are in the infant stages of trying to determine how to collect, how to store and what reporting
  mechanism to use. Attention to bike and ped data is growing and this research will review data sources that may be used
  and new technology that may provide the department with some options for collecting the data.


                                                            IV-40
PART IV: Summary of Comments                                                                                            13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings



Item #53:        Guidebook for Certification and Management of
                                                                                                       NR   0   1   2    3   4    5
                                                                                           (17) SCOR            4        3   4    6

24-35            Flexible Rockfall Protection Systems                                      (46) RAC    1    4   7   4    8   10   11



Standing Committee on Research
■ improving our means and methods of dealing with geohazards is critical to providing and maintaining safe transportation
  corridors. The continuation request and increased funding should be supported.

■ Missouri has minimal concerns with rockfall.

■ If successful, the output will be useful

■ ADOT, with many other states, has faced a lack of nationwide standards and guidelines in this high risk category for
  many years - this is urgently needed.

■ [Rating: 5] We had two Interstate closures and fatalities last year from rockfall. States have been reaching increasingly
  for flexible systems to manage these risks. The specifications for short and long term performance expectations of these
  systems is needed. FHWA is not conducting work in this area, and NCHRP is the appropriate source. The Panel has
  worked hard to optimize the scope and the additional requested funds are needed.
Research Advisory Committee
■ Mississippi does not use rockfall protection systems.

■ A very useful continuation project.

■ Development of National Standards is appropriate and needed.

■ Additional funds are needed for this project to clearly answer the question.


Item #54:        Guidance for Achieving Volume Reduction of Highway
                                                                                                       NR   0   1   2    3   4    5
                                                                                           (17) SCOR            1   4    3   6    3

B-21             Runoff in Urban Areas                                                     (46) RAC    4    3   1   7   11   14   5



Standing Committee on Research
■ The proposed volume reduction tool development is timely and important given the new runoff volume regulations. The
  problem outlined in this statement was recently addressed in NCHRP 565 and therefore does not warrant the funds
  requested here.

■ Could this be combined with B-12

■ Is the proposed budget large enough to accomplish this work?

■ runoff is variable throughput event; accommodating all runoff may not be appropriate

■ The NAS study identified reducing the volume of stormwater discharge as the best way to reduce stormwater pollution.
  Infiltration methods can be problematic for the road.

■ EPA is hinging a lot of their recent activity on the NAS report. More recently EPA came out with a memo (11/12/10) that
  states that they intend to use stormwater flow volume or impervious cover as a surrogate pollutant parameter.

■ Revise some language in the problem statement to evaluate more of what other DOTs are doing to meet specific volume
  reduction requirements in the Urban Area, especially when R/W is not available.

■ [Rating: 5] Few volume reduction tools have been developed and proved effective in the highway right of way. High

                                                           IV-41
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

  priority.

Research Advisory Committee
■ Not clear that NCHRP 565 is insufficient.

■ EPA changing regs will force volume control that MDOT has few tools to achieve.

■ Need to conduct literature search

■ This is interesting, but complicated in that we try to keep water off the roads. Also, the panel was small for such a big
  subject.

■ National Stormwater Regulations are focused on volume control. DOTs need to be evaluating options for future use.

■ This has been an issue here for several years and one that we have been wrestling with. Volume reduction in urban areas
  is going to be tough for highways no matter how you slice it. The problem is of nationwide interest (or will be soon).
  Many of our municipalities are wrestling with this, but I don't know of much research going on. I would say it's a toss up
  on the probability of success. However, if it is successful it could have a big cost savings or at least point out where more
  risks are in terms of high cost. I like the prospect of looking at new construction and retrofits.
Other
■ [Rating: NR] Rank #8

■ [Rating: 3] This research is vital in preparing for EPA’s future rulemaking related to post construction operations. Little
  research is currently available related to volume reduction on linear impervious transportation facilities. This proposal
  would investigate practices that would enable DOTs to reduce run off volumes. This research would explore cost
  effective practices to meet the future requirements. At this time the only manner known for meeting volume reduction is
  the acquisition of costly right of way. The results of this research could potentially develop other cost effective methods.
  This study has a high potential for return.


Item #55:        Impact of Funding Levels on Pavement Management
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        1       5    3   4    4

B-04             Strategies                                                                  (46) RAC         3   3   7   11   11   10



Standing Committee on Research
■ the proposed topic seems to be most useful to those states who do not have modeling capabilities within their PMS (or
  who do not have a PMS). If a state has a PMS system with modeling capabilities, they should be able to conduct this
  analysis on their own for their own conditions (which I think would be the most useful path to pursue).

■ We concur with Mr. Lemer on this; seems redundant.

■ This is standard practice in many PMSs

■ We don't see this as being a national problem, and would be difficult to quantify in a research report.

■ This information is critically needed to make cost-effective choices.

■ [Rating: 4] Addresses issues deemed important by both FHWA and the AASHTO Joint Technical Committee on
  Pavements. If selected, the project should build upon the ongoing FHWA projects noted in our initial review of the
  problem statement.
Research Advisory Committee
■ Alaska happy with its own effort to do this.

■ Advanced pavement management software systems and programs have been created and purchased or implemented by

                                                            IV-42
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

  some States; others use HERS but as the submitter indicates, models are not state-specific and results of programs are not
  consistent. But as is pointed out by the FHWA review, existing research projects address this problem.

■ while development of a methodology may be interesting, the project does not specifically require good pavement
  management data, therefore the usefulness to MnDOT may not be greater than our present method. Synthesis may be
  needed

■ This is a very timely and relevant topic.

■ Information already available, I question the cost to summarize existing information.

■ Any meaningful Pavt Mgt System should already be able to perform this analysis at the State level. Condition data is
  unique to each State, so national roll-up is difficult.

■ High priority from JTCOP.

■ The problem statement misses the fact that pavement management strategies are largely made by economic constraints
  and administrative policies. ODOT already has tools to do this type of fact finding.

■ Interesting and timely topic. The $ amount is a little high for a literature review and selection of the best method for
  pavement management only. Would be beneficial for all transportation infrastructure because certainly bridges and
  stormwater infrastructure would also impacted in similar and different ways by limited funding.
Other
■ [Rating: 2] There are a number of vendors that provide the proposed PMS capability already and using NCHRP funds to
  develop software that already exists does not appear to be a good use of funds. Also, the proposed project also will not
  develop a generic PMS system for the proposed dollar amount. What this proposal suggests is that states are not using
  PMS systems, which is likely true but disappointing. Also, the literature search provided is inadequate. The original
  PMS book by Hudson and Haass covers the topic in the mid 80s. To our knowledge, most other books on PMS also
  cover it.

■ [Rating: NR] Rank #10

■ [Rating: 3]

■ [Rating: 5] This subject is critical to understanding how our current climate of underfunding infrastructure impacts our
  future ability to address ever-increasing critical needs.


Item #56:        Use of Performance Measures and Benchmarking in
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR            2   4    1   6    4

F-04             DOT Fleet Operations                                                         (46) RAC    2    3   5   7    7   13   8



Standing Committee on Research
■ Not ripe (and not as well defined as F-03 or F-05, which came out of the same TRB cmte). Given the diversity of DOT
  fleets, I think the potential of this topic is conditional on the success of F-05.

■ Always looking for ways to benchmark.

■ Perhaps combining F-03, F-04 & F-05 would be useful.

■ This study is more appropriate as a synthesis study.

■ New ideas and measures are important to closing gaps created in the measurement program.

■ [Rating: 2] The fleet and equipment topics have limited interest to HIAM at the present time. Of interest but not a high
  need.
                                                            IV-43
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings


Research Advisory Committee
■ Concur with HSOMn that project is premature pending review of related 20-07 products.

■ Linking fleet operations with performance measures is timely, due to the emphasis now placed on specific goal-oriented
  agencies. Including fleet operations/maintenance in the benchmarking concepts sited at the recommended funding level
  is appropriate for NCHRP.

■ Performance measures could serve as a good management tool to link day-to-day activities with overall achievement of
  agency objectives (outsourced or not), but because not all agency objectives are equal, and equipment is used differently
  across the board, performance measures cannot necessarily be standardized. Most DOTs have explored the aspects of
  fleet service and planning. There may some benefit to performance measures, but anything critical has already more than
  likely been explored or implemented.

■ Good potential benefit for equipment bureaus. Should combine F-03, F-04 and F-05.

■ Too many variables between states and fleet operations. Suggest combining F03, 04 & 05 AND waiting until the 20-07
  project is complete.
Other
■ [Rating: 1] Suggest combining F-03, 04 & 05. Also suggest that the 20-07 Roadmap for equipment management be
  completed first.


Item #57:        Developing Design Criteria for Cost-effective Multi-lane
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR            1   2    6   4   4

C-01             Loop Ramp Design                                                             (46) RAC    2    3   4   7   15   8   6



Standing Committee on Research
■ Not a high priority. I agree that criteria for multi-lane ramps are needed, but this is not an ideal design for system
  interchanges. Directional or semidirectional ramps are much better alternatives, and areas of application for this work in
  VA would be fairly limited.

■ This research is needed to update the Green Book. Several states are approaching this design differently and none of
  them seem to be exactly the right design answer.

■ This information could be used to improve many ramps in NH. Especially important since current Green Book guidance
  doesn’t exist.

■ The research needs to be expanded to include studying the system wide impacts and not the isolated benefits of
  interchange improvements. Ramp metering should also be included in this study.

■ [Rating: 4] This proposed research is targeting specific research needs for the next (2015) Green Book and will address a
  missing element in the existing release.

Research Advisory Committee
■ It is the opinion of the DDU that this study is unlikely to be successful because of the limited sample size that is available
  for study. It may not be possible to obtain a statistically meaningful sample of existing tow-lane loop ramps for the
  study. Connecticut is a populous state, yet we do not have any town-lane loop ramps.

■ Essential - We need guidance for Green Book. More use of multilane loop ramps is being made due to capacity issues.
  Supported by AASHTO and TRB Committee

■ Multi lane loop ramp design criteria is needed

■ Currently three is no guidance available for multilane loops, so there is a real need for this research.

                                                             IV-44
PART IV: Summary of Comments                                                                                                 13-Apr-11
Reviewer        Comments                                                                                    Distribution of Ratings

■ The operation of two-lane ramps is more important that specific geometric details in building them. With modern
  computer design it's trivial to use a design vehicle turning path on a curving roadway.

■ We have little info about design and operational characteristics of one-lane loop ramps let alone two-lane loop ramps.


Item #58:        Predicting Long-Term Degradation and Head Cut
                                                                                                            NR   0   1   2    3   4    5
                                                                                                (17) SCOR            2   2    6   4    3

E-03             Migration at Bridges: Implications for Selecting and                           (46) RAC         1   3   8   15   13   5

                 Designing Bridge and Culvert Foundations and Scour
                 Countermeasures
Standing Committee on Research
■ Very timely topic and promising approach.

■ This has been studied by a lot of different people/organizations. For example, head cut migration is included in the
  National Resources Conservation Services "National Engineering Handbook". Predicting long term degradation is
  difficult and depends upon many factors that are unknown. As for the design/selection of foundations this is simple - use
  deep foundations. Scour countermeasures has also been studied as well. I would rate this project fairly low.

■ Degradation is site specific and is difficult to predict due to variability in each stream.

■ We know what happens, but how to quantify the effect with practical methods of design has always been a challenge.
  Additional work in this are would be a plus.

■ [Rating: 4] The impacts of degradation and head cutting have profound implications for many bridges and culverts
  throughout the U.S. Past attempts to mitigate these impacts have resulted in short term solutions. This study will provide
  the community with a consistent set of approaches that can be leveraged to resolve these challenges.
Research Advisory Committee
■ Multidisciplinary approach is required that is not well addressed in an Engineering manual.

■ Well planned study that should yield practical results. Particularly like the use of field data as opposed to lab data.

■ Past NCHRP has been completed on this subject.

■ F-03, F-04 &F-05 closely connected recommend Synthesis study

■ A quick and simple method for predicting this would be useful

■ Head cuts not common in Ohio and therefore we would not see benefit of this research.

■ Head cuts affect scour vulnerability of bridges


Item #59:        Safety Impacts of Intersection Sight Distance
                                                                                                            NR   0   1   2    3   4    5
                                                                                                (17) SCOR        1       6    2   5    3

G-37                                                                                            (46) RAC    1    2   1   9   11   14   7



Standing Committee on Research
■ As stated, there was no reliable study, to the current standard, to quantify safety effects of sight distance improvement.
  The study should consider complexity of road geometries in an intersection-influence area such as driveways near the
  intersect

■ Appropriate topic - this will enhance what information we have.


                                                              IV-45
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ There is no reliable estimate of the safety impacts related to intersection sight distance and research is needed in this
  area. The initial edition of the Highway Safety Manual does not include a factor for this element because of the absence
  of research in this area.

■ Objectives only focus on one provision of appropriate intersection sight distance (ISD). Too much money being
  requested.

■ [Rating: 5] The proposed research outcomes will meet a critical need to quantify safety impacts related to the intersection
  sight distance. The expected outcomes can offer additional knowledge to future updates of AASHTO's Green Book and
  Highway Safety Manual.
Research Advisory Committee
■ A reliable estimate of the safety impact, in the form of a crash modification factor/function related to ISDs, is needed. It
  is appropriate for NCHRP, and it is of nationwide interest. The goals are achievable, and the payoff is anticipated to be
  high in relation to the cost of the study.

■ Dynamic Sight Distance may need to be introduced as well - that of moving vehicles and lines of sight being
  compromised during operation

■ Not convinced this is a serious need since actually do have tables now and there is no real evidence it's not adequate.

■ How would this interface with HSM???


Item #60:        Defining the Benefits and Expected Performance of
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR   1        1   3    6   2   4

F-10             Pavement Preservation Treatments                                            (46) RAC    4    6   2   6    9   6   12



Standing Committee on Research
■ Value is high but agree with NCHRP comments that existing work should be completed first/ We’ve been seeking this
  holy grail for decades. A more useful tool would be a process that agencies could use to tease their own performance
  estimates out of their PMS data. The modeling stuff with these highly variable treatments is an academic rat hole.

■ Needed research but NCHRP review notes that two projects are on-going in this area.

■ Project scope is too large and would overlap research that has been already performed for specific preservation
  treatments.

■ This information is critically needed to make cost-effective choices.

■ Many states are implementing Pavement Preservation programs but lack the data to support the benefits and performance.

■ [Rating: 3] This is an important topic. However, as noted in the NCHRP staff review, several pertinent projects are
  ongoing. It is recommended that the project be scaled back to a $200,000 project to develop a thorough compilation of
  currently available information and well-founded plan for the filling in the holes.
Research Advisory Committee
■ Postpone until related NCHRP projects are completed.

■ The types of pavement preservation treatments have grown over the last five years. New types of treatment are being
  developed daily, along with new variations of some of the old ones. When all three proposed stages are completed in six
  years, there may be several new treatments available.

■ While this is needed study, the data to support an analysis more detailed than what has been done already is not available.
  Need a different approach (comparative test sections with evaluation)


                                                            IV-46
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ Engineers are required to choose the appropriate treatments needed to extend the life of pavements. This includes
  knowing what treatment to apply and when to apply it for the best bang for the buck. By knowing the modeled
  performance life of each type of treatment, engineers can determine the most effective time to place and treatment and
  predict more accurately the next appropriate actions to take to extend the life cycle of a roadway.

■ This isn't a bad idea but each treatments performance is dependent on climate and pavement quality that varies
  significantly from state to state.

■ An independent cost benefit analysis is a good thing and a nationally accepted idea of when a treatment is done would be
  good. If Phase 1 is really meaningful, the report may be worth it. However, may be premature as preventive
  maintenance specifications continue to evolve. Also, not all treatments perform the same way in all states.

■ Consider in 2013 NCHRP Program

■ Highest priority for the subcommittee on maintenance. Everyone needs this data.
Other
■ [Rating: 5]


Item #61:        Structural Design Parameters and Long-Term
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR        1   1   1    4   8    2

D-04             Durability of Performance-Based Concrete Mixes                             (46) RAC    1    2   4   7   14   13   4



Standing Committee on Research
■ It is important to document the variations in structural design parameters whether it is conventional or performance based
  mixtures.

■ Scope is too large to consider durability.

■ Guidelines for use of performance based concrete mixes would be useful to transportation agencies. Medium priority.

■ This study may want to include the "Use of coarseness/workability factors for optimizing Portland Cement Concrete Mix
  Designs, per ACI 302.1 R-04 Chapter 6.3

■ The study should be more comprehensive, reflecting more factors related to durability.

■ [Rating: 4] Efforts to develop a framework for the development of performance-based specifications are necessary and
  should be supported. The revised problem statement is much more reasonable in scope.
Research Advisory Committee
■ The proposed research is intended to develop guidelines for performance-based concrete and recommending relevant
  changes to the AASHTO LRFD specification, but there is not indication of performing any physical testing to verify
  findings in the research tasks. The problem statement is important and recommended to be considered as medium
  priority research.

■ Additional effort/funding may be needed, but we need to start the effort.

■ MDOT already utilizes many performance type measures for structural concrete. We are funding several state studies
  looking at very specific concrete applications. The results of this would be of limited use for MDOT.

■ Low probability of usable output.

■ The proposed research doesn't develop new methods for testing, or rapid systems, it just is a literature search and
  consolidation of data. The issues with additional measures isn't that we don't know about them but that either controlling
  them or specifying and measuring them doesn't really gain us any direct performance gain.

                                                           IV-47
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ An extensive research on high performance concrete performance specifications, taking into account durability factors,
  has been conducted and guidelines developed by the NRMCA. It was recently adopted by the ACI. As an option,
  AASHTO can defer to the ACI recommendations.
Other
■ [Rating: 5] # 5 priority of the Subcommittee on Bridges and Structures


Item #62:        Development of an Improved Metric for Serious Traffic
                                                                                                          NR   0   1   2     3   4    5
                                                                                              (17) SCOR        1   2   2     6   1    5

G-35             Crash Injuries                                                               (46) RAC    3    2   2   10   12   6    10



Standing Committee on Research
■ Low possibility of producing metrics that can be linked to police crash data and can be used in practice. Low possibility
  of accepting such metrics as standards in states and localities

■ This addresses one of the safety performance measures being contemplated for the next surface transportation bill.
  Implementing any findings could be difficult, but the research is needed. The research must consider the data capabilities
  of the variety of agencies involved.

■ Interesting topic, but does not seem to be realistic unless the safety stakeholders work together in a cooperative manner.

■ [Rating: 4] There is a high need for uniform and accurate metrics of serious traffic crash injuries. If serious injuries are to
  be used as performance metrics, an accurate method to determine injury occurrence and seriousness is needed. Variability
  in ratings by different agencies would need to be addressed.
Research Advisory Committee
■ feedback of medical treatment data is problematic and much delayed. Not sure what value comes from it regarding safety
  of highways.

■ Important to National TZD

■ Strong Need and Good Potential; Important for information driven business of project justification and prioritization


Item #63:        Examination/Analysis of The Federal Bridge Formula
                                                                                                          NR   0   1   2     3   4    5
                                                                                              (17) SCOR        2   1   3     2   6    3

C-08             (FBF) For Allowable Gross Vehicle (GVW) Weight to                            (46) RAC         4   2   8     9   11   11

                 Determine Operational Effectiveness Given Forecasted
                 Increases in Freight Transportation Over the Next 20
                 Years
Standing Committee on Research
■ Agree with comments that the value of the research is high, but the funding level is not sufficient to complete the work
  in a meaningful way.

■ Goals and process are not well conveyed.

■ Recommend re-submitting proposal based on NCHRP & FHWA comments. Agree with HSOBS comment to combine
  truck weight proposals.

■ [Rating: 5] The outcome of this project is important to both Federal and State officials, as well as the travelling public
  and industry. However, as written, the statement is not specific as to what the recommended research would involve
  more than a literature review and examination of design elements. If approved, there should be an emphasis on not only
  current bridge conditions and/or future projections but also on examination of the bridge conditions and capabilities
  relative to an adjustment in the Bridge formula, as well as pavement materials and vehicle design.

                                                             IV-48
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

Research Advisory Committee
■ AK does not currently use the federal bridge formula for overweight vehicles. The research should include assessment of
  implementation & policy barriers.

■ Bridge formula has a great effect on road pavement, and any increase on overall vehicle gross weight can increase
  pavement fatigue dramatically. Objective on this proposed research is to determine operational effectiveness given
  forecasted increases in freight transportation over the next 20 years and is not clear where the affected area would be
  (pavement, highway structures, truck owners/drivers, etc.) on this research.

■ Important study.

■ Low benefit to MT

■ This project is very timely based on the request from the trucking industry to increase the maximum allowable gross
  weight to 97,000 lbs.

■ Not sure what this research would give us.

■ With the trucking industry pushing hard to increase legal loads, this study would help determine the level of safety in the
  current formula and help owners make the right decisions on increasing allowable truck loads.
Other
■ [Rating: NR] (Recommend all truck weight related proposals be reviewed and combined)

■ [Rating: 4]


Item #64:        Efficient Utility Accommodation for Highway
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        1   3   1    4   4    4

D-27             Construction Projects                                                       (46) RAC    2    3   4   8    7   12   9



Standing Committee on Research
■ this could legitimately be combined with D-25 accommodation and sequencing are related and lack of each has a major
  imace on construction projects

■ Determining and compiling best practices for notification and collaboration with utility companies to accommodate them
  for highway construction projects are a very high priority nationwide. Many state DOTs are still developing projects
  without providing the highway designers access to utility information (particularly subsurface utility information) until it
  is too late to be utilized efficiently. A common result is that utilities are relocated that could have been “designed
  around”. Late, nonexistent, and/or confusing information about highway plan revisions that impact utilities is also a
  continuing problem causing additional expense to all parties involved, especially tax and rate payers.

■ We agree this is appropriate as a synthesis project.

■ Consider a synthesis study on this topic

■ synthesis

■ This study is more appropriate as a synthesis study.

■ Seems reasonable to explore this topic. Anything that can help improve the efficiency of utility relocations during
  construction would be helpful.

■ This is extremely important. It is an every day goal and there are still opportunities to improve the current business
  practices and to bring-in innovative strategies. This would be responsive to the current economic climate and to public
  demands.

                                                            IV-49
PART IV: Summary of Comments                                                                                                   13-Apr-11
Reviewer         Comments                                                                                    Distribution of Ratings

■ [Rating: 4] It is estimated that half of all highway and bridge projects eligible for Federal funding involve the relocation
  of utility facilities, and construction generally takes longer and costs more when utilities need to be relocated. Based on
  these facts, it is critical to have readily available and accurate utility data to ensure quality product delivery in the shortest
  time possible. This study would assemble best practices and suggest solutions for these issues.
Research Advisory Committee
■ Utilities can be a black hole for a project budget and timeline - more research in this area is needed.

■ Better suited as a synthesis?

■ High- Utility accommodation is a major issue.

■ Utility coordination is a huge issue in preconstruction.

■ The nuts & bolts of the process, always good to assess current practices, especially given technological advances.

■ We would be most interested in aspects of this research relating to GIS capabilities and integration with 2D/3D design
  plans


Item #65:         NCHRP 25-32 - Phase III: Measuring and Removing
                                                                                                             NR   0   1   2     3   4    5
                                                                                                 (17) SCOR        2   1   2     3   5    4

B-25              Metals from Storm Water in Highly Urbanized Areas                              (46) RAC    2    4   2   10    8   12   7



Standing Committee on Research
■ This project builds on and adds valuable information to an existing NCHRP project, and has good potential for
  implementation. This problem statement follows logically from NCHRP 25-32. It specifically follows up on a specific
  recommendation made in this earlier research.

■ These have been studied excessively in the past 20 years.

■ This is a needed continuation for a successful ongoing project.

■ premature in light of other current research

■ This can only be done through source control.

■ Based on sampling that ADOT does under its stormwater permit, we have seen an increase in most monitoring
  constituents, heavy metals included. If this continues, I see ADEQ mandating some sort of treatment during the next
  permit issuance.

■ This research is critical from a policy standpoint. There is a need for recommendations by the Federal Government on
  TMDLs.

■ [Rating: 4] Field testing is warranted once Phase II is complete.
Research Advisory Committee
■ Design specifications have yet to be developed. To capture pollutants requires a long-term operational and maintenance
  commitment.

■ Metals have traditionally been difficult to remove and continue to be a concern with EPA.

■ Question whether two sites are enough?

■ Water Quality Standards are moving towards dissolved fraction.


                                                              IV-50
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ Recommend re-evaluation after completion of NCHRP 25-32

■ This is the continuation of research that is currently ongoing. This next phase is critical if the research in place comes up
  with methods that look like they will work. Field testing is required to get approval from the Department of Ecology for
  use in Washington. It has nationwide significance in light of new EPA regulations (the rest of the nation is catching up
  with our requirements). No other work is underway that I know of. If good proposals are found in the current research
  then the possibility of success is high. It is hard to estimate the return on the cost. It depends on the findings from the
  current research. If the footprint is small then the benefit could be huge. This ties in with B-21 in that if we could find
  BMPs that remove pollution we wouldn't have to be as concerned with volume in some cases.

■ The limitation to highly urbanized area makes this less attractive as a national project, and more appropriate as a pooled
  fund project.

Other
■ [Rating: 4] Many state DOTs have been identified as TMDL stakeholders due to the desolved metals that are left behind
  on roadways from brake pads and tires. Few states have enacted laws that require manufatures to reduce the levels of
  desolved metals in automobile parts. This research is critical as more states are named in TMDLs. This study will
  provide field tested practices that can be effectively implemented in highly urbanized areas were there is a lack of right of
  way and safety is a major concern.


Item #66:        Effective Transportation Asset Data Management
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR            2   2   5    5   3

B-16                                                                                          (46) RAC         4   4   7   16   8   6



Standing Committee on Research
■ Again, their appears to be redundancy with B-15; suggest looking at this with B-15 and combine

■ Related to B-01, B-02, B-14

■ Consider combining B01, B02, B14, B16

■ Agree to combine B-01, B-02, B-14 and B-16

■ combine B 14-17

■ This project should be combined with B15 and the first two objectives of B02.

■ Synthesis

■ Combine B01, B02, B14 & B16 for $500,000.

■ Suggest combining B-01, B-02 and B-16, and request $600,000 for funding. Combine and work on B-01, B-02, & B-
  16, first then do the Business case projects by combining B-14 and B-15. Caltrans is already conducting research using
  GIS for asset management of culverts.

■ [Rating: 4] Addresses issues of national importance. Issues identified in B-01, 02, 14 and 15 (if selected for funding)
  should be integrated, and the budget increased - $350,000.

Research Advisory Committee
■ Combine B-01, B-02, B-14, B-15, and B-16 into one ~$400k study to develop data management standards. The resulting
  study should provide robust marketing materials for Executives and funding authorities.

■ Utilizing GIS for Asset Data Management would be beneficial in tracking most DOT assets. Research in this area might
  also include how DOTs can successfully merge their various databases. If the databases are linked together tracking all
  assets, using a GIS coordinate would alleviate potential problems with in-house data.

                                                            IV-51
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ See B-2 comment- rating is for combo only

■ Work Statement should emphasize evaluation of the most effective practices rather than just a best practice compilation.

■ Combine with B-1, B-2, and B-14. Consider benefit of GIS in asset management and best practices.

■ This seems to be almost a duplicate of B-02.

■ Recommend combining B-01, B-02, B-14 and B-16.

■ Research objective is poorly defined

■ Combine B-01, B-02, B-14 and B-16

■ Do not think this would be useful to DOTs. If move forward combine with B-01, B-02 and B-14.

■ See comment B-01

■ Because most states are in their early states of developing asset management programs, this research would capture the
  first stages of developing an asset management system, therefore it would be of the value to agencies that are facing
  challenges of initial implementation. Suggest combining B14, 15, 16 & 17 together for $250-300K
Other
■ [Rating: 2] Suggest combining B-14, 15, 16, & 17 for a total of $250-300K


Item #67:        Evaluation and Assessment of Environmentally
                                                                                                          NR   0   1   2     3   4    5
                                                                                              (17) SCOR            1   8     3   3    2

E-04             Sensitive Stream Bank Protection Measures                                    (46) RAC         1   1   11   12   11   9



Standing Committee on Research
■ This research would be of significant value to DOTs as these type of materials are becoming more and more prevalent. It
  is rated here as a "3" because the urgency for this project does not appear to be as high as some of the other problem
  statements covered by this subject area.

■ Benefits beyond existing studies unclear.

■ This is the top priority among the four scour proposals.

■ [Rating: 3] There is a need to observe the long-term performance of vegetative and geosynthetic materials, but DOTs do
  not have sufficient guidance on durability and service life expectations of these stream bank stabilization measures.
  Therefore, the establishment of a national database documenting the long-term performance of these measures will help
  DOTs that may be required to use them.
Research Advisory Committee
■ This should establish general evaluation techniques and design criteria where none exist.

■ High - We have major issues with environmental requirements

■ Costly investments being requested by DNRE, need data to be sure they can survive large flows. If they don't work, can
  provide to DNRE to end the requests.

■ F-03, F-04 &F-05 closely connected recommend Synthesis study

■ I believe this is a worthwhile effort that will provide another tool for DOTs to consider when designing erosion control.
  As regulatory TMDLs increase in number and stringency more erosion control options around stream banks will be need

                                                             IV-52
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

  to be available.

■ This has direct application in MT

■ Regulatory agencies pressure Dot's to use them but real world performance is needed

■ Appears to be a field review of existing sites.

■ Important research on longevity and performance of bioengineered highway protection techniques
Other
■ [Rating: NR] Rank #4

■ [Rating: 2] After review the Committee concluded that the focus of this study is rather site specific and that it would be
  difficult to apply the measure across the board.


Item #68:        Access Management in the Vicinity of a Freeway
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        1   3   3     5   1   4

G-29             Interchange                                                                 (46) RAC    1    2   3   6    14   8   11



Standing Committee on Research
■ Note that VDOT (Rob Hofrichter) was a co-submitter. This topic is not covered well in the Access Management Manual.

■ The current AASHTO Green Book is outdated and should be revised. The proposed research would provide objective
  data for that purpose.

■ [Rating: 3] This research would be helpful but is not entirely lacking today. With AM principles having advanced
  nationally since the 70’s, one would expect universal AM principles to be given proper attention with any site
  development plan in the vicinity of interchange ramps, beyond that attention which may have existed when the facility
  was originally built, and more importantly, when the existing land development thereto was originally built.

Research Advisory Committee
■ High- Major issues nationwide about access near ramp terminals

■ This could yield some useful information; however, the Access Management Manual covers this topic well.

■ Protecting the integrity of freeway / Y Line Interchanges is critical. Significant problems have compromised many a
  project and many of our high crash locations in North Carolina are at junctures that are too close to the interchange and
  poorly location within complex intersection areas of influence. North Carolina's 1000 foot minimum has been a major
  step forward - however future interchanges will likely need even more protection/spacing and we need to be able to work
  toward retrofitting the failed configurations implemented in the past.

■ An extremely important area to study, not only at interchange locations. Access Management is a low-cost, high-benefit
  tool which improves both throughput and safety of a corridor.


Item #69:        Standardizing LWD Stiffness Measures for Compaction
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR            1   3    8    2   3

D-11             Quality Assurance                                                           (46) RAC         1   3   13   16   6   6



Standing Committee on Research
■ This study, if successful, will facilitate the construction quality control based on stiffness, and reduce dependence on the
  nuclear density testing.

■ LWDs have great potential for monitoring roadway structures as they are being built. However, this is not the biggest
  need at this time and there are currently test methods in place to assure quality construction.
                                                            IV-53
PART IV: Summary of Comments                                                                                            13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings


■ To implement performance based specification for pavements, light weight deflectometer (LWD) methodology for
  interpreting constructed pavement structural sections will be required. The results of this research will not be
  implemented immediately but we need to start now if we intend to move towards performance based or performance
  related specifications.

■ [Rating: 3] Proposed research has merit, but is not of the highest urgency from National perspective.
Research Advisory Committee
■ Design improvement likely.

■ Not on a national basis with them using other equip.

■ MDOT has done similar research. We are interested in pursuing research that may eventually replace the nuclear gauge
  for acceptance, however there are more pressing research needs at the present time. Also we the issue of lack personnel
  to implement the results of the study.

■ LWD technology is of great interest to us, but modulus-based compaction control has several glaring shortcomings.

■ Procedure to be developed may be too elaborate as a construction control for subgrade compaction.

■ There is a general movement away from nuclear density gauges, and towards QA methods that measure modulus, or
  stiffness. This research would fill a need in interpreting test results. The researchers involved have done previous work
  in this area, and are considered experts on this subject. Reviewed by a member of TRB AFP60

■ Limited usefulness compared to standard methods, more expensive


Item #70:        Recommended Techniques and Best Practices to
                                                                                                       NR   0   1   2    3   4    5
                                                                                           (17) SCOR        2       3    5   5    2

B-05             Reduce, Minimize or Mitigate Transportation Impacts                       (46) RAC    1    4   1   6   15   14   4

                 on Watershed Functions and Values
Standing Committee on Research
■ Though covering a great deal of pollutant inputs, this research could be very useful if the authors are thorough in their
  research and receive compelling information from DOTs on the type of decision making tool that would be of most value
  to them. If this project is chosen, the researchers should consider certain rehabilitated storm culverts as potential point
  sources for pollution. Culvert repair technologies often use chemicals that can leach contaminants into streams. This is a
  well thought out and well scoped research project. However, based the information provided is not convincing enough to
  commit $500,000. Simply compiling the current methods used by DOTs and putting them in a selection tool does not
  seem to be worth this level of funding.

■ Good topic but the problem statement needs to be further refined and focused.

■ Not clear; nor well articulated.

■ Don't need decision making tool - NEPA provides that; but C/B analysis of management practice would be a 5 to me

■ Agencies do like a watershed approach, but such methods are already being applied in decision-making.

■ Of great importance to ADOT and other DOTs

■ [Rating: 4] Selection of BMPs on a watershed basis as opposed to a point source method. Refinement of problem
  statement needed to reflect BMPs selection from a watershed perspective.
Research Advisory Committee


                                                           IV-54
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ This research is not likely to change the decision-making process. The objective is already emphasized in FHWA's
  Every Day Counts initiative. (Planning & Environmental Linkages)

■ The Problem Statement is too broad in scope. As the FHWA reviewer pointed, it is unclear if there is "enough data to
  provide a framework for a decision making tool." The NCHRP reviewer for Problem Statement B-22 noted the Problem
  Statement B-22 may be combined with Problem Statement B-05.

■ Functions and values concept will be very important for stream mitigation.

■ Combine all GIS asset Management projects

■ Current mitigation strategies and BMPs provide an acceptable balance between Transportation and potential Watershed
  impacts.

■ To be fully successful this would need to have a strong emphasis on cost-savings and permit streamlining benefits to
  DOTs.
Other
■ [Rating: 4] This research was submitted by SCOE’s subcommittee on Natural Systems and Ecological Communities as a
  top priority. This research is critical as the results will enable DOTs to explore opportunity to treat water quality more
  holistically as apposed to meeting site specific requirements. The proposed research will also investigate the cost/benefit
  ratio of BMPs in various conditions. This analysis is critical as DOTs are working towards improving water quality in a
  cost effective manner. The results of the research could potential aid in a paradigm shift that would allow DOTs to treat
  stormwater in locations were greater results would be achieved.


Item #71:        Operational Impacts of Access Management
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        1   3   4    2   2   5

G-43                                                                                        (46) RAC         3   5   9    9   6   13



Standing Committee on Research
■ The problem statement correctly asserts that the operational effects of multiple, coordinated Access Management
  techniques are not well documented. Furthermore, it remains to be seen if the new HCM 2010 will include methodologies
  to analyze the effects of multiple Access Management techniques, which are otherwise poorly documented or non-
  existent. Previous access management research could be likened to a mason considering the size and shape of a natural
  stone before placing in the wall being built, whereas this research could be likened to stepping back from the stone wall
  and considering the appearance and structure of the many individual stones placed together. Both perspectives are
  necessary for the stone wall and effective application of Access Management.

■ Recommend this be done as a synthesis at a lower cost.

■ This study is more appropriate as a synthesis study.

■ Need more reliable and accurate information on access management. The current information needs updating.

■ The project should be delayed, and possibly be rewritten, based on the updated Access Management Manual.

■ [Rating: 4] We support the national advancement of AM practices. If the product were to be, as item 6 suggests in the
  project statement, a “look-up table” (i.e., a guide, rating, or matrix that quantifies the benefit of (combinations of) AM
  treatments) then this would advance the AM knowledge base. We would urge that the target audience be the public and
  decision makers, and less-so practitioners of AM.
Research Advisory Committee
■ Recommend pursuit as Synthesis study.

■ Agree with reviewer and recommend a synthesis study.

                                                           IV-55
PART IV: Summary of Comments                                                                                            13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings

■ This would be a very beneficial study.

■ Redundant with data already available.

■ Building on previous research done abroad will reduce initial costs.

■ Quantifying the operational impacts of access management will have a fast impact on implementation of those
  techniques. Access management = low cost, high impact investment.
Other
■ [Rating: NR] Rank #7


Item #72:        Comparison of Fleet Funding, Management, and Charge
                                                                                                       NR   0   1   2    3   4   5
                                                                                           (17) SCOR            2   3    4   4   4

F-03             Back Systems to Develop Optimum Fleet Efficiency                          (46) RAC    2    4   7   7   10   9   6



Standing Committee on Research
■ Agree with NCHRP reviewer that this is a Synthesis topic. $100K is probably about right.

■ Interested in charge back systems.

■ Please focus on vehicles used by state inspectors, etc.

■ Perhaps combining F-03, F-04 & F-05 would be useful.

■ Consider a synthesis study on this topic

■ This study is more appropriate as a synthesis study.

■ I believe this critical to maintaining an effective fleet management program.

■ [Rating: 2] The fleet and equipment topics have limited interest to HIAM at the present time. Of interest but not a high
  need.

Research Advisory Committee
■ Concur with HSOMn that project is premature pending review of related 20-07 products.

■ Many states now have asset management units working on these issues.

■ Problem statements F-03, F-04, F-05 are all closely connected. F-04, Benchmarking fleets will be more easily completed
  after F-05 is completed so that an 'apples to apples' comparison can be made. After the equipment is classified,
  benchmarked and needs are identified then funding most likely will be defined. If funding isn't available, then that is
  your management tool. You can only work from within your funding confines. Determining the 'best practice' for
  funding a DOT fleet would go a long way to helping address the other issues as well.

■ While the resulting models and findings may be useful as a measure of comparison and optimal efficiency, many states
  have already invested in similar systems. With the current state of the economy, the return wouldn’t justify the cost at
  this time.

■ Good potential benefit for equipment bureaus. Should combine F-03, F-04 and F-05.

■ Suggest combining F03, 04 & 05 AND waiting until the 20-07 project is complete.

■ While Wisconsin may be in a small minority, WisDOT does not operate a major maintenance fleet and would find little
  benefit from F-03, F-04 and F-05.

                                                            IV-56
PART IV: Summary of Comments                                                                                            13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings

Other
■ [Rating: 1] Suggest combining F-03, 04 & 05. Also suggest that the 20-07 Roadmap for equipment management be
  completed first.


Item #73:        Pavement Smoothness Acceptance Levels
                                                                                                       NR   0   1   2    3   4    5
                                                                                           (17) SCOR        1   1   3    6   4    2

D-14                                                                                       (46) RAC         3   4   6   14   13   5



Standing Committee on Research
■ How smooth is smooth enough? No one has ever settled on an answer and it's a good question. Combined with D-20,
  this would be a 5.

■ Many states have already gone through correlating public perception with objective measurement of pavement
  smoothness and condition.

■ Is this suitable for synthesis?

■ if combined with D-20; otherwise 1

■ Similar studies have been completed in the past. Will be very difficult to link pavement smoothness to longterm
  pavement performance.

■ This research could set the minimum smoothness bar for pavement based on the public's perception of what is a smooth
  pavement. Based on this research appropriate pavement smoothness acceptance criteria can be established. Consider
  combining with D-20.

■ [Rating: 3] As noted in the problem statement, FHWA has sponsored pertinent work in the past. If funded, the project
  should consider not only user perceptions, but also smoothness impact on infrastructure performance AND freight.
Research Advisory Committee
■ Rank assumes project is combined with C-07.

■ This project is complementary to D-20, and is needed. Recommend combining.

■ Agree with NCHRP reviewer

■ Research proposed in D-20 should be completed first. This project could be added as a possible task at the end of D-20.
  Initial limits should be set based on increased pavement performance and reduced user cost. Then, remembering there
  are practical limitations to how smooth a pavement can be constructed, those initial limits based on economic benefits
  could be compared to public perception, if deemed appropriate. Potential for useful results that impact policy and
  strategy for smoothness.

■ National standards could be helpful.

■ Problem statements misses the point that increased smoothness at construction has clearly increased construction quality.
  Further, panel studies are not necessary to determine where incentive levels should be or determine localized correction
  levels.

■ There have been several projects looking at this....
Other
■ [Rating: 4] Levels of acceptance and incentives are an industry wide issue. DOT’s spend a considerable amount of
  money on incentives and given funding levels knowing what is acceptable is important.



                                                          IV-57
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings



Item #74:        Behavioral Effectiveness of Transportation Funding
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR        1   2   2    5   6    1

A-03             Options                                                                      (46) RAC    1    3   3   8   13   10   7



Standing Committee on Research
■ Thesis of this statement: the debate over revenue tools should not be about covering the cost of facilities, but about
  rationalizing the use of facilities. Every transp econ understands this; few pols and fewer voters care. Is NCHRP a cost-
  effective way to shine the spotlight on this clear but unpopular fact? TRUCE has the potential disadvantages of (1)
  ultimately serving a rarified user pool at the same time as (2) it could provide a poor model for behavioral responses IN
  THE U.S. to VMT type fees with congestion pricing embellishments ("VMT Plus") if it draws behavioral data from
  international experiences in nations/city-states with radically different institutions (e.g. Singapore). As a tool for the
  rational persuasion of American politicians on the merits of "VMT Plus" fees, it might in the end be counterproductive.
  We don't long as a nation to BE Singapore, though VMT fees might be the answer to a lot of our problems. Wrong tool
  for $200K.

■ The proposed effort makes sense but a real world application seems difficult and in some cases unrealistic. Given the
  many assumptions required to conduct behavioral analyses (travel demand modeling), the concern is it may become a
  project that is never used.

■ We're not convinced people make transportation choices based on the type of funding method as much as on the
  perceived trip-cost and convenience.

■ Behavioral analysis of pricing strategies has national interest and implications; outlines important revision to in-place tool
  for assessing cost-behavior relationships.

■ Recommend the problem statement be rewritten to clearly define the objectives. The research is of value because the
  discrepancy between funding and need continues to grow. Caltrans supports the research needed to explore innovative
  transportation financing to meet the current and future needs of the system.

■ [Rating: 4] The research should also attempt to examine how freight traveler behavior is different from passenger travel
  behavior. As an example, to increase productivity and maximize hours of service, many freight carriers alter the hours
  they operate on the highway system to avoid travel in urban areas during congested hours/peak hours. The ability to do
  this is of course driven by shippers' delivery demand, thus avoiding certain hours is not always achievable.
Research Advisory Committee
■ In the near term, premature for some state(s) with no taxes?

■ The interaction between a new taxation model for transportation model and the taxpayer needs to be very well
  understood, lest the taxpayer change behaviors to render moot the new model.

■ Consider combining aspects of A-02 and A03

■ very hard to study, but potentially more applicable.

■ This problem statement is well-defined and will likely lead to a successful research project. However, its benefit would
  be limited to highly congested areas in the country where building out is not an option and congestion management is a
  key issue.

■ Consistent with MDT Toolkit recommendations

■ If move forward with A-02 or A-04, combine them with this study.

■ ODOT funding is constrained by federal and state legislative bodies.


                                                            IV-58
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ Overall a good concept for expanding on an existing, hopefully free, model to DOTs should be an added benefit. The
  proposal was a bit sketchy on how the researchers will come up with elasticities on overall prices and how combining
  different types of transportation revenue sources would have an impact on price and demand elasticities; Overall the price
  appears reasonable for the research but I don't have knowledge on how many state DOTs already use the TRUCE model
  now or see the impending need for this research

■ If this proposal proceeds, I strongly suggest the title be changed from "behavioral effectiveness of transportation funding
  options" to "behavioral impacts from transportation funding options." The title now seems to imply a policy direction or
  a desired outcome rather than true research on the topic.


Item #75:        Guidance on Work Zone Capacity Estimation and
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR        1   1   3    6   6

G-20             Simulation                                                                 (46) RAC    1    4   1   5   18   11   5



Standing Committee on Research
■ I agree 100% that better work zone capacity estimates are needed. There is a total lack of consistency among states in
  how they estimate work zone capacity, however. I reviewed a TRB paper this year that showed how much capacity
  estimates could vary depending on the analytical technique used. More consensus needs to emerge on how to measure
  capacity before this project is ready to move forward.    Agree there is a strong need for this. This project could be a
  means to develop a consensus. G-10 should be combined with this statement.

■ Consider combining w/ G10.

■ Combine with G-10.

■ If approved, the submitter should speak with the submitter for G-10 to incorporate California's concerns.

■ Work zone capacity research will be useful. This is not my area of expertise, though and judged on solely on the
  problem statement.

■ Defer this research until the results from G-10 have been reported.

■ [Rating: 5] This research is critical for improved understanding and management of work zone impacts and we fully
  support it - in fact, FHWA wrote this statement. Also, there are two independent Statements with a similar focus, which
  provides further validation for the importance of the topic. We recommend integrating Problem Statement G-10
  (Development of a Procedure for Predicting Traffic Capacity in Work Zones) into this Statement.
Research Advisory Committee
■ Suggest combining this with Problem No. G-10.

■ I would rate this one as “4”. Any assistance that can be provided to better predict traffic times in work zones would
  benefit the road users.

■ This one is very similar to G-10

■ The simulation component may offer some value beyond what is currently available.


Item #76:        Business Requirements for Cross Asset Performance
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR            1   3    8   4    1

B-15             Management and Coordination                                                (46) RAC         4   4   5   19   8    5



Standing Committee on Research
■ Proposed NCHRP Study B-15 should be higher priority; appears to be redundancy in this proposal to B-15

■ While we want to make the best use of our resources, not sure how often or the significance of cross asset management
                                                           IV-59
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer         Comments                                                                                 Distribution of Ratings

  issues??

■ combine B 14-17

■ This project should be combined with B16.

■ This research effort would help California in better coordinating and linking across management systems to better plan
  and schedule project and activities to avoid redundancy. Suggest combining B-14 and B-15 for $300,000. Combine and
  work on B-01, B-02, & B-16, first then do the Business case projects by combining B-14 and B-15. Caltrans is already
  conducting research using GIS for asset management of culverts.

■ [Rating: 3] If selected for funding, relationship to B-16 should be considered.
Research Advisory Committee
■ Combine B-01, B-02, B-14, B-15, and B-16 into one ~$400k study to develop data management standards. The resulting
  study should provide robust marketing materials for Executives and funding authorities.

■ good project

■ See B-2 comment- rating is for combo only

■ This is a very interesting and needed topic but will be difficult to implement in DOTs.

■ I support the research if one of the deliverables is a template that could be utilized by multiple partners.

■ Absolutely the way we need to move forward. Results of this research could make DOTs more efficient and effective in
  spending limited transportation dollars.

■ This is an admirable effort in finding methods of data sharing/cooperation in order to effectively and efficiently
  coordinate resources between a multitude of entities.

■ Many of the objectives stated in this research proposal could be handled by a commercial asset management system;
  however, there is value in performing these activities outside of an asset management system if one is not available.
  Suggest combining B14, 15, 16 & 17 together for $250-300K
Other
■ [Rating: 2] Difficult to do this project on a national scale. Suggest combining B-14, 15, 16, & 17 for a total of $250-300K


Item #77:        Injury and Fatality Causation during Rigid Barrier
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR        2   1   1    6   5   2

G-34             Impacts                                                                      (46) RAC    1    5   3   4   18   8   6



Standing Committee on Research
■ Study could have major benefits. Should increase budget to $300k. Since study is longitudinal, the interaction between
  electronic stability control and crash outcome should be considered.

■ Believe the funding level is much too low for the work to be done. And agree that there may not be sufficient
  information available from crash reports from which to draw valid conclusions.

■ This causation study is critical to help understand how rigid barriers perform in the field.

■ Concrete barriers are supported by Maintenance personnel for safety reasons due to exposure.

■ [Rating: 3] The objective of identifying the causes of serious injury & fatalities to allow for optimal selection and design
  of rigid barriers is beyond the proposed resources. There is a need to better understand the relationship between impacts

                                                             IV-60
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

  with rigid barriers and occupant risk to improve future crashworthiness criteria, but it may be difficult to get the needed
  data from existing sources.

Research Advisory Committee
■ Hard to know where this leads…all barriers are roadside hazards, which are in theory less hazardous than the hazard
  being shielded. More info will help.

■ No Comment

■ High

■ Can this be accomplished at investment level noted?


Item #78:        Crossing Solutions at Roundabouts and Channelized
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        2   2   4   1    8

03-78A           Turn Lanes for Pedestrians with Vision Disabilities                         (46) RAC    1    2   3   6   11   16   6



Standing Committee on Research
■ This is worth continuing. VDOT is committed to using more roundabouts when appropriate. Roundabouts are becoming
  more prevalent and attention should be given to accommodating pedestrians and peds with disabilities at these types of
  intersections.

■ Crossing should be done away from the roundabouts. Why was this not considered in the original scope?

■ I question why this is being submitted as a Continuation Request. The research is complete and was just published as
  NCHRP Report 674. It seems like the transportation community should take some time to digest the findings and if there
  are additional needs, a new problem statement should be submitted and properly vetted.

■ [Rating: 5] Roundabouts are a very important safety technology, and accommodating visually impaired pedestrians
  effectively at them while still maintaining the safety and operational benefits for drivers is a big issue. Accordingly,
  continuation of this important work is essential to figuring out how the two can go together effectively. Roundabouts are
  one of the 9 proven countermeasures that the FHWA Safety Office is heavily promoting and roundabouts’ prominence at
  intersections within the U.S. will only increase in the future.

Research Advisory Committee
■ No mention of international practice scan in continuation statement.

■ This subject is a major issue that needs resolved.

■ Needed because we don't have enough peds crossing and handicap research at roundabouts; Need to coordinate with the
  PROWAG exception for roundabouts

■ Since the draft ADA guidelines require ped signals at roundabouts, this research is needed to develop appropriate
  measures to achieve accessibility.

■ With the adoption of PROWAG, will this issue will resolve itself?

■ The issue of disabled pedestrians at roundabouts is a serious issue - particularly at multi-land roundabouts.




                                                            IV-61
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings



Item #79:        The Business Case for the Use of GIS in Asset
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR            4   3    4   2   4

B-14             Management                                                                  (46) RAC    2    3   6   7   10   9   8



Standing Committee on Research
■ The use of GIS is critical for states to better manage their assets, for data integration, modeling asset performance, and
  communication of those results.

■ There already is a business case and DOT's understand the benefits of using GIS in asset management.

■ It seems that the business case for the use of GIS should be apparent already.

■ Related to B-01 and B-02

■ Consider combining B01, B02, B14, B16

■ Combine B-01, B-02, B-14 and B-16

■ combine B 14-17

■ This project should be combined with the third objective of B02.

■ This is especially important for ADOT especially to all the groups with Spatial Data not utilizing GIS

■ Combine B01, B02, B14 & B16 for $500,000.

■ Suggest combining B-14 and B-15 for $300,000. Combine and work on B-01, B-02, & B-16, first then do the Business
  case projects by combining B-14 and B-15. Caltrans is already conducting research using GIS for asset management of
  culverts.

■ [Rating: 0] Integrate into B-16 with B-01 and 02 (B-16 rated 4).
Research Advisory Committee
■ Combine B-01, B-02, B-14, B-15, and B-16 into one ~$400k study to develop data management standards. The resulting
  study should provide robust marketing materials for Executives and funding authorities.

■ See B-2 comment- rating is for combo only

■ Prefer approach on B-02.

■ Combine with B-1, B-2, and B-16. Consider benefit of GIS in asset management and best practices.

■ Recommend combining B-01, B-02, B-14 and B-16.

■ Combine B-01, B-02, B-14 and B-16

■ Agree combing with B-2

■ Combine with B-01, B-02 and B-16.

■ See comment B-01

■ This research is very important and useful to agencies that already have an asset management system. Suggest combining
  B14, 15, 16 & 17 together for $250-300K


                                                            IV-62
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

Other
■ [Rating: 2] Suggest combining B-14, 15, 16, & 17 for a total of $250-300K


Item #80:        Bridge Runoff Treatment Analysis and Treatment
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        1   4   1    4   5    2

B-27             Options                                                                     (46) RAC    2    4   5   3   11   13   7



Standing Committee on Research
■ This research addresses a large challenge that VDOT is facing right now. I agree with the NCHRP reviewer: though the
  contaminants in bridge runoff are known, the treatment and disposal options are the most significant objectives of this
  proposed research. This is certainly a growing problem for state DOTs that must be addressed - it is simply a matter of
  when. If this project is undertaken, I doubt the budget allocated will be sufficient since field work will be essential;
  sampling and analyses will quickly exhaust the $300K.

■ Why are we treating runoff from bridges any differently than runoff from pavement??

■ Relevant and can be put into practice.

■ bridge runoff not adequately reviewed

■ Already addressed by NCDOT and other studies.

■ [Rating: 4] Treatment options in limited space for metals could build upon NCHRP 25-32.
Research Advisory Committee
■ Alaska DOT is completing related research project.

■ The proposed research statement investigation on bridge runoff characteristics should be interesting. Proposed research
  has potential payoff with low urgency.

■ Increased research could produce cost effective options for BMPs.

■ Need is there but this probably isn't MT oriented.

■ While this topic is important, the research is focused on new BMPS and not the impacts of the bridge runoff to the
  aquatic habitats. Existing research has shown that bridge deck runoff has de minimus effect. Collection systems are
  expensive and difficult to maintain. Off-site mitigation strategies would be more pertinent.

■ Consider phasing the funding: 1) characterizing bridge run off; and 2) if characterization shows the need for new BMPs
  (which is expected), develop them. The payoff could be large if the second part of the research finds new BMPs to
  specifically removed dissolved metals. It will help DOTs address stormwater requirements.
Other
■ [Rating: 3] The Committee acknowledged that there are ranging needs among the states for this research. Some states
  already deal with their bridge runoff effectively and in a standardized manner while others are still searching for effective
  methods. Whereas the need may be higher in certain regions overall this proposal was seen as less of a priority when
  compared to the other stormwater related research needs.




                                                            IV-63
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings



Item #81:        Access Management as a Sustainable Transportation
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        2   2   1    4   5   3

G-42             Technique                                                                  (46) RAC    1    5   4   5   15   8   7



Standing Committee on Research
■ As the problem statement correctly asserts, Access Management is a proven technology to enhance safety and operational
  efficiency, and yet is often publicly opposed. This problem statement offers a cost effective way to bolster support for
  access management by providing an objective method linking sustainability to the proven Access Management benefits
  of safety and operations.

■ Need more reliable and accurate information on access management. The current information needs updating.

■ The more that sustainability can be distilled by performance measurement tools, the better. We know that access
  management is a valuable tool, so creating a practical way of measuring its success in this way would be valuable.

■ [Rating: 2] While it is commendable to apply sustainable attributes to any project, I would consider AM sustainability-
  specific arguments as one of the weaker “selling points to the public” when proposing a public project, especially when
  weighed against the greater project-applied sustainability arguments.
Research Advisory Committee
■ Consistent with MDT Toolkit recommendations.

■ AM has been subject of significant effort, investments, outreach, and research - its coming down to a matter of avoidance
  by key officials. Not even hopeful that additional research would be of benefit. We've wasted so many good
  infrastructure facilities (lost much of the operational quality of service and invited/tolerated poor safety performance) by
  failing to protect the publics investment in operational and safety integrity. We shouldn't be surprised that we continue to
  have the same problems by applying the same short cited approaches to corridors.

■ Not clear on what is in the project description.
Other
■ [Rating: 5]


Item #82:        Safety Prediction Models for Six-Lane Urban and
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        1   3   2   6    2   3

G-36             Suburban Arterials and One-Way Arterials for Use in                        (46) RAC    3    3   4   4   16   8   7

                 the Highway Safety Manual
Standing Committee on Research
■ Needed to fill the gap in Highway Safety Manual. Funding seems to be too high, and less than $400K seems appropriate.

■ Appropriate topic - this will enhance what information we have

■ Would be beneficial in determining benefit/cost ratios and crash reduction factors when improvements are proposed.

■ Safety prediction methods for six-lane arterials or for one-way arterials can be interpolated from other methods.

■ Delay this research until NCHRP 17-45 has been completed.

■ [Rating: 5] With the 1st Edition of AASHTO's Highway Safety Manual moving into implementation and on-going
  research to develop predictive methods for freeways, this proposed study will address the needed predictive methodology
  for 6-lane urban and suburban arterials and 1-way arterial for a future edition of the HSM.
Research Advisory Committee

                                                           IV-64
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ The objective of the research is to produce models that develop a predictive method for use in the Highway Safety
  Manual to address crash frequency and severity for both roadway segments and intersections on arterials with six or more
  lanes and one-way arterial streets.

■ High


Item #83:        How DOTs Can Respond to Nutrient TMDLs
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        1   2   3   4    5    2

B-22                                                                                         (46) RAC    3    4   3   8   11   10   6



Standing Committee on Research
■ This is an interesting problem that was fairly recently identified. Though it certainly merits additional research, I am not
  convinced it is one of the top stormwater problem statements presented here. The fact that no literature review was
  included as part of the information presented here is also problematic.

■ This is an upcoming problem that to this point has been addressed through expensive stormwater treatments.

■ This may be of more importance down the road. Currently AZ does not have that many TMDLs and the ones that have
  been developed have yet to name ADOT as a contributor. With that said that may change and the research garnered by
  this project could be beneficial.

■ There is no literature review for this question and the objectives are very general. The proposers should rewrite and
  resubmit.

■ [Rating: 4] Nutrients are a difficult issue for DOTs to manage. Reasonable nutrient management tools are needed,
  especially where space for volume reduction is limited.
Research Advisory Committee
■ Will need to consider a variety of climates.

■ The Problem Statement topic is of national scope and the approach is logical. The NCHRP reviewer for Problem
  Statement B-22 noted that Problem Statement B-22 may be combined with Problem Statement B-05.

■ MDOT has no concerns about nutrient TMDLs.

■ High priority for Mn/DOT environmental area

■ Integrate B-23 with this?

■ Important issue for many DOTs

■ Good idea - but not enough meat in this research.

■ Based on WSDOT’s recent experience, in order to develop a scientifically credible monitoring program that would
  provide highway characterization and BMP effectiveness data, costs would well exceed the $200,000 budget for this
  topic.
Other
■ [Rating: 4] This research is timely due to the upcoming EPA post construction rule, the Chesapeake Bay TMDL
  requirements and EPA’s November 12th memo “establishing total maximum daily loads (TMDL) wasteload allocations
  (WLAs) for storm water source and the NPDES permit requirements based on those WLAs.” As more states are
  identified in Nutrient TMDLs the DOTs will need to identify creative and cost effective practices to meet the required
  reduction levels. This research begins moving treatment from a point source model to a watershed level approach. The
  research would explore the cost effectiveness of treating the TMDLs through out a project’s watershed instead at the end
  of the pipe.

                                                            IV-65
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings



Item #84:        Distance-Based User Fee Risk Assessment
                                                                                                           NR   0   1   2    3   4   5
                                                                                               (17) SCOR        1   1   4    6   3   2

A-04                                                                                           (46) RAC    1    2   7   8   10   9   8



Standing Committee on Research
■ This proposal doesn't look complete and in its present form it seems very similar to A-02 above. The risk assessment
  described here has been done extensively in recent research and can probably be best enriched by every state running its
  own pilot--which is probably what needs to be done to discern the risks relevant to a given DOT. I think the discussion
  has advanced beyond the goals of this proposal.

■ While the proposal has need, there are concerns it is a spin on existing research being conducted and may not be fully
  warranted.

■ We would prefer they look at the legal issues and reciprocity challenges a distance-based user fee system would face. It
  seems states continually hear about distance-based pricing but have multiple questions regarding such. Perhaps TRB
  should prepare a report for Congress that incorporates these various areas of study along with work already performed.

■ Really the only viable alternative at this time to the gas tax, and therefore critically important to evaluate.

■ [Rating: 1] This has been undertaken as part of other studies including NCFRP 29.
Research Advisory Committee
■ Premature.

■ Duplicates A-02 and A-03

■ Consider combining with A-02.

■ may be some overlap with a-02 and a-03

■ This problem statement proposes research that is vital to the nation and includes the types of issues that we are very
  interested in learning more about here in Mississippi. While we are a little concerned about the thoroughness of the
  submitted problem statement, we do believe this to be a vital issue that should be studied.

■ Are we really ready for this at the National level? If move forward, combine with A-02, and A-03 for one study.

■ Proposal appears a little half finished; missing literature review summary which is pretty critical for this proposal since a
  lot has already been done on identifying the problems and risks with distance based user fees in transportation; there are
  lots of generalizations in the background and the risks identified are not too ground breaking .

■ This research assumes a future outcome that "...widespread adoption of distance-based user fee system would occur in
  the future." Whether or not I agree on this premise, it is just a premise and not a pre-determined outcome.
Other
■ [Rating: 4]




                                                             IV-66
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings



Item #85:        Incorporating Economic Productivity Gains into Benefit-
                                                                                                          NR   0   1   2     3   4   5
                                                                                              (17) SCOR            4   5     3   1   4

A-01             Cost Analysis for Transportation Investment Projects                         (46) RAC         1   4   10   15   8   7



Standing Committee on Research
■ If one could robustly estimate ∆output at the project level for B/C analysis, the research described here would already
  have been done. ∆ output (e.g., productivity) is a valid way to value benefits of transp improvements. ∆ wealth (e.g.,
  R.E. prices) and ∆ cost (e.g., R.U.C.) are other valid (and mutually exclusive) ways. At the project level, ∆ cost (R.U.C.)
  is usually easiest to compute and easiest to defend, hence most popular. $200,000 investment in the output-based
  (productivity-based) methodology is like $200,000 investment in bike lanes: counting on (unproven) latent demand.

■ While it is important to further explain the benefits of transportation investments, the proposed tasks, especially 2 and 3,
  need to be more clearly explained. Plus REMI has a Policy Insight model and a TranSight model that can estimate the
  economic impacts of transportation investments.

■ Agree with NCHRP reviewer that this problem is best researched within other disciplines.

■ The problem statement is somewhat unclear which makes evaluation difficult. The research seems to focus on finding out
  if it is possible to substitute labor productivity for labor earnings when evaluating the economic benefits of transportation
  projects. Productivity is by definition a broader measure than earnings but given the way productivity is measured it is
  much more difficult to quantify and it may be impossible to do in a meaningful fashion. Benefit Cost Analysis is
  typically used to choose between projects or rank alternate uses of funds. Labor productivity would only be superior to
  labor earnings in a BCA framework if you could show that labor productivity varied more between projects than labor
  earnings. I am giving the project a 2 because the measurement problems with productivity decrease the likelihood of a
  successful outcome for the actual focus of the research.

■ John Horsley was interested in this topic in preparation for re-authorization. This January the Bipartisan Policy Center
  published a paper, Strengthening Connections Between Transportation Investments and Economic Growth, authored by
  Martin Wachs and Douglas Holts-Eakin that can be found at the following link:
  http://www.bipartisanpolicy.org/library/research/transportation-investments. This paper discusses the topic of this
  research problem statement. The standard B/C tools use labor compensation to monetize user (i.e., labor or business)
  cost savings from transportation improvements, but fall short of capturing broader economic gains such as increased
  economic activity or employment. This research will explore merits of a modified B/C methodology that would use labor
  productivity (GDP or output per worker) to capture long-term economic gains from improved mobility. This
  methodology would allow DOTs and regions to estimate broad economic gains in terms of business activity and
  employment that would result from proposed transportation projects and programs. Current tools allow only estimating
  the direct labor or business cost savings, which is only a portion of the total gains.

■ [Rating: 3] If possible, research should attempt to monetize the value of freight travel.
Research Advisory Committee
■ The research should focus on specific ways transportation investments can enhance economic productivity - and their
  relative significance.

■ Problem statement focused on very small portion of population and topics which are marginally related to transportation
  issues or can be accommodated for through other methods.

■ It would be nice to have the economic productivity gains rather than just having user costs in the benefit-cost analysis for
  transportation investment projects.

■ As proposed, would mainly yield more questions. Good topic, but this stage of the work could be done more cheaply.

■ Proposed research represents a current problem that needs addressed. Question - how will research being performed at
  the national level address the differential between regional output measures/values? (e.g. CA factors are not necessarily

                                                            IV-67
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

  applicable in OH). Will the study provide measurements respective to each of the nation's subregions?

■ ODOT does not have a significant reliance on formal benefit-cost analysis results for project selection. Ave 3

■ Important information but not urgent.

■ Agree with the concept of the proposal but the overall purpose and critical need for the research was not real clear; Is the
  purpose to show higher economic benefits in B/C valuation from transportation projects because when we compare with
  non-highway projects, we aren't showing enough positive benefits? or is it to show higher overall benefits for comparison
  among various transportation projects? The overall uses of the research was not well explained.
Other
■ [Rating: 2] The Committee believes this research proposal has an interesting approach but that there are already accepted
  methodologies for achieving the end goal. For this reason it would be useful information to have but is not a high
  priority.

■ [Rating: 4]


Item #86:        Determining the Validity of Network Pavement
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR   1    1   1   4    6   1    3

C-07             Condition Data                                                               (46) RAC    1    4   4   8   11   10   7



Standing Committee on Research
■ NCHRP 401 (Flintsch & McGhee) provides a more useful perspective and has already been completed.

■ Needed but not a top priority.

■ Should already have this mechanism in LTPP

■ [Rating: 4] If the problem statement is revised as recommended by FHWA and NCHRP staff, this project could make an
  important contribution to the caliber of data used for pavement condition assessment at both National and State levels.
  Data collection and quality control/assurance procedures are integral to any post-collection assessment of validity.
Research Advisory Committee
■ The problem for Alaska is the validity of the parameters themselves to Alaska's unique and relatively undeveloped
  highway system.

■ I believe there is a need to validate the Pavement Condition Data. Currently there are various Pavement Management
  Softwares that have the capacity to flag outliers and erroneous data within a Pavement Management System, especially
  for year-to-year data. Our current QC/QA procedures require us to make a visual assessment after an outlier is found
  within our pavement condition data.

■ This project seeks to identify and develop data quality validation techniques that can benefit a number of state highway
  agencies, from those that have a formal data quality management plan to those that are working towards developing one.
  This is especially important for network level surveys as more SHA are implementing new automated technologies, and
  ensuring consistency/continuity with legacy data is critical. SHAs that do not have a complete data quality management
  plan can benefit from the state of the practice of other states, which is one of the objectives of this proposed project.
  However, the project’s preliminary literature does not reflect the plethora of work that has been done in this area. The
  objectives and tasks are too general and should address the specific distresses that will be evaluated and the most
  important issues surrounding them. Accurate linear/spatial data referencing and its intricacies is one of them. It is a very
  critical factor to a successful pavement management program due to the systematic nature of the errors involved and the
  impact on a SHA’s resurfacing program’s scope and budget.

■ I don't see a need for a research study to establish triggers for when quality control should be applied to data.


                                                            IV-68
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings

■ Also of national interest.

■ This is a much-needed study.

■ In general, the industry is trying to be too precise with network level data. Variability due to several factors is to be
  expected. The network end result is relatively insensitive to local variation because of the huge quantity of data.

■ Very little payoff for Ohio.
Other
■ [Rating: 5]


Item #87:        Guidelines for Traffic Control Devices for Curves
                                                                                                           NR   0   1   2    3   4   5
                                                                                               (17) SCOR        2       4    5   3   3

G-04                                                                                           (46) RAC    2    6   3   8   10   7   9



Standing Committee on Research
■ This addresses a relevant area to the VA Strategic Highway Safety Plan, but it remains unclear whether the outcome of
  the study would result in significant changes in practice or safety improvement.

■ This project would help determine the impacts of a systematic approach to safety treatments for curves.

■ The National Committee on Uniform Traffic Control Devices is trying to develop language for the next MUTCD and this
  research will be very helpful in determining how it should be written.

■ This research would be useful, but may be more complicated than described as there is a variety of applications of curve
  delineation and warning.

■ This does not seem to be a problem for TRB to handle.

■ Research in this area has been done. Refer to the Pooled Fund 5(065) research at
  http://www.pooledfund.org/projectdetails.asp?id=281&status=4

■ [Rating: 5] Run off the road fal crashes are the single largest safety problem; curves is a major problem area within that
  category. Enhanced traffic control devices could be a low cost solution.
Research Advisory Committee
■ Curves are major crash locations, need to evaluate effect of more curve warning and advisory speed signing on safety.

■ Research is needed for this, but compared to the other problem statements, it rates medium. It is appropriate for NCHRP,
  and it is of nationwide interest. Similar research has been conducted, but this has its own focus. The probability of
  success is not high, and its potential return relative to its cost is not great either.

■ Much-needed research

■ More time is needed for states to respond to changes in 2009 MUTCD. Premature.


Item #88:        Minimizing Conflicts between Construction and Utility
                                                                                                           NR   0   1   2    3   4   5
                                                                                               (17) SCOR        1   4   2    2   6   2

D-25             Sequences of Work                                                             (46) RAC    1    3   7   5   12   8   9



Standing Committee on Research
■ combine with D-27

■ It is imperative to identify situations that have produced such conflicts and determine if it was avoidable. If avoidable,
                                                             IV-69
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

  identify steps to be taken to avoid the conflict. If not avoidable, identify steps to enhance cooperation between
  stakeholders to avoid or reduce contractor delay claims. Such conflicts waste money and delay many projects. Therefore,
  avoiding or eliminating them provides a direct payoff.

■ Good idea to improve utility interaction with DOT and reduce time lost and delays.

■ The desired outcome is elimination of conflicts. Any action to sustain, further this goal would be valued and appreciated.

■ [Rating: 4] Alliance contracting is more complex than standard contracting processes and involve more "open" sharing of
  information and resources than design-build approaches, and would require re-evaluation and possible re-formulation of
  current contracting approaches. The idea is to assemble a "joint" team of agency and contractor employees and
  effectively negotiate solutions to issues that present best value to all parties. Used in other countries, this may be
  available in other industries, and would be examined for potential highway-development project use in the US.
Research Advisory Committee
■ Is topic being addressed by current SHRP2 efforts - R-11, R-15, R-15a?

■ Current Problem in Kansas.

■ This is a great idea but could be combined with D-21

■ Need Formal Conflict Assessment & Resolution Process. Construction Sequencing requires a detailed focus that is
  generally not resourced well.

■ WSDOT's policy is to relocate utilities in advance of project construction; This information may be valuable for instances
  where this is not possible - but may be constrained by Washington State's unique constitutional limitations
Other
■ [Rating: 2] Certainly a need not convinced research can solve the problem.


Item #89:        Characteristics of Work Zone Barrier Crashes
                                                                                                        NR   0   1   2     3   4   5
                                                                                            (17) SCOR        1   1   4     6   3   2

G-44                                                                                        (46) RAC         4   1   11   16   7   6



Standing Committee on Research
■ This project is needed. The title should be revised to include guidance on the appropriate use of positive protection
  devices in work zones--this is the primary deliverable from the study. However, it will be difficult to obtain the
  required data as written. Because of this it is not rated as 5. It may be possible to rescope the tasks to develop such
  guidelines using available data. The project results would be practically useful. Need to revise the project title
  including "guide" or "guidance". One concern is regarding obtaining data on mechanics of the crashes such as impact
  speed and angle. Information obtained or inferred from police crash reports would probably be inaccurate.

■ G-45 needs to be completed before this research.

■ Budget is too high

■ This study might be incorporated into G-45.

■ Complicated issue. Will the crash reports provide sufficient information? Need more detail as to exactly what would be
  delivered, and how agencies would be able to use it to develop and modify their work zone designs.

■ Review the project already completed by University of California at Davis on Work Zone Barriers:
  http://www.ahmct.ucdavis.edu/toolbox/index.htm?pg=HomePage, before developing the scope of work.

■ [Rating: 4] Getting WZ crash data remains a problem even with recent Federal rules on work zones. Past efforts had

                                                           IV-70
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

  difficulty capturing sufficient, detailed data due to changing traffic and work zone conditions. A major part of the
  resources would need to be devoted to data collection for a small set of cases limiting the potential for new insights.

Research Advisory Committee
■ Substantially similar to G-45.

■ This research could provide benefit if future guidance on positive barrier use is distributed.

■ Price tag is too high.

■ Implementation of the research findings is the big payoff. Ave 4.5

■ Good fit with recent Federal Rulemaking


Item #90:        Applying Asset Management Principles to Winter
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR   1    2   2   1    3   6   2

F-08             Maintenance; Concept and Model Development                                   (46) RAC    4    6   2   6   14   6   7



Standing Committee on Research
■ AM Principles are not generally applied to Winter Maintenance developing a system to do so could reduce costs and
  provide the appropriate treatment for the conditions

■ It is unclear how asset management applies to winter maintenance. Each state has a different approach based on the
  desired performance to be achieved.

■ [Rating: 5] This is very timely and important research as resources for winter maintenance operations activities have
  declined in comparison to capital and major maintenance projects, resulting in poor highway performance and service
  levels during winter weather. The application of asset management principles to winter maintenance will ensure that
  agency resources are allocated efficiently and optimally across various types of highway expenditures and investments.
Research Advisory Committee
■ Maintenance Decision Support System (MDSS) Pooled fund study seems more relevant approach.

■ Given the winter the northeast US is having, many may feel this should be ranked higher. Although important in times of
  tight budgets, this project is of regional and not national significance and should be addressed through a more appropriate
  mechanism by the states that will benefit from it.

■ Important study.

■ Mississippi is a sunshine state, however we have a few show/ice events per year this is not something we should be
  pushing to approve.

■ This research could bridge the gap between technology and winter maintenance operations, while increasing efficiency,
  safety and mobility.

■ To the extent that this research proposes to develop tools for analysis of "appropriate levels of service" in winter
  maintenance it will be useful. Further justification or promotion of MDSS, RWIS, and FAST aren't really necessary as a
  new research objective. I'm still a little unclear as to how an asset management approach can be applied to what is
  essentially a fluid and dynamic set of circumstances (winter weather). Funding for winter maintenance is a largely a
  function of the severity of any given winter. It justifies itself, and funding shortfalls are typically forgiven or made whole
  at the expense of other functions or infrastructure needs - not vice versa.

■ This appears best suited for pooled fund research, specifically TPF-5(218), Clear Roads Winter Highway Operations
  Pooled Fund


                                                             IV-71
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

Other
■ [Rating: 3]


Item #91:        Determining the Influence of Road Surfaces on Vehicle
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR            4   3    5   3   2

B-26             Noise at Locations Adjacent to a Roadway: Precision                        (46) RAC    2    1   6   8   13   9   6

                 and Bias Statements
Standing Committee on Research
■ I agree that P&B statements are needed for these developing stds, but would like to know what FHWA would do with
  accepted stds. Will it really improve chances of altering TNM?

■ I thought NCHRP just completed a report on this topic...is this a "phase II"?

■ Perhaps wait until 2013.

■ This problem statement involves comparing the various methods of measuring tire-pavement noise. One of the reasons
  FHWA currently does not allow for the use of quiet pavement for noise abatement is that there is not a standard method
  to measure the effects of pavement type on traffic noise levels. While research into the benefits of quiet pavement and its
  potential use for noise abatement may be of benefit to some states, the NHDOT does not support the use of certain types
  of pavement specifically for the purposes of noise reduction due to the other variables involved in the selection. Traffic
  noise in NH has been and will continue to be determined using average hourly Leq from receptor locations and as such,
  this research would provide little benefit.

■ AZ is already performing a comparable study

■ The need for a full AASHTO standard for Statistical Isolated Pass-by Method (SIP) and Continuous-Flow Traffic Time
  Integrated Method (CTIM) is a current need because FHWA is updating the Traffic Noise Model (TNM) to consider the
  acoustic performance of pavements. Approved SIP and CTIM methods will benefit FHWA efforts to incorporate
  pavement performance measures into the new Traffic Noise Model under development and will help state DOTs evaluate
  the acoustic performance of new and existing pavements. The SIP process measures low volume roads where individual
  vehicles can be identified and the CTIM measures streaming traffic where it is impossible to hear separate vehicles pass
  by. Federal regulations use overall traffic noise levels for policy related issues. The Caltrans On-Board Sound Intensity
  Method is a better pavement acoustic measurement process (also a new AASHTO Standard) - more accurate, faster, and
  cheaper; but the SIP and CTIM process would still have application.

■ [Rating: 4] This problem statement is desired by state highway agencies because they are currently three different
  AASHTO provisional standards out on measuring traffic noise and the influence of pavement types on these
  measurements. State highway agencies need to know the benefits and shortcomings of each of these to determine how to
  best approach tire/pavement noise.
Research Advisory Committee
■ Precision and bias statements are needed for the development of wayside noise measurement standards.

■ Suggest scope clarification.

■ We already have some of this data. The current model needs to be upgraded, but we don't need research to get this done.

■ An AASHTO standard specification for these wayside measurement techniques is being developed and is slated for
  provisional approval in January 2011. This research is needed to support the standard before it can be fully approved.
  There is a high probability of success. The measurement techniques are generally agreed upon, but measurements and
  validation are needed before the techniques fully adopted and used nationally. Pavement selection has the potential to
  reduce the height of, or eliminate the need for, noise walls which can cost states millions of dollars per year.

  There is international interest in this topic.
                                                           IV-72
PART IV: Summary of Comments                                                                                                 13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings

Other
■ [Rating: 4] The title and scope of the research should be clear that this is on traffic noise not pavement noise. There is a
  statement in the description that suggests that the predominant source of highway noise is pavements, which is only true
  for low percentages of trucks. The two test methods that are to be evaluated are measuring total traffic noise, and as such
  it is not a surrogate for pavement noise. The problem statement should be rewritten to better reflect what is being
  measured.

■ [Rating: 4] Hopefully, this will be a step forward in getting the consideration for low-noise surfaces to be used in
  mitigating noise and reducing the height and number of noise walls.

■ [Rating: 3.5] After review the Committee believes this research would help provide options for noise abatements when
  barriers result in a visual impact. The Committee supports additional research in this area and believes this would help
  fine-tune the current noise model and provide additional options for state DOTs when they deal with noise.


Item #92:        Durability, Curing, and Acceptance Guidelines of
                                                                                                           NR   0   1   2     3   4    5
                                                                                               (17) SCOR        1   1   2     7   5    1

D-12             Shotcrete for Use in Retaining Wall Fascias                                   (46) RAC    1    3   4   10   15   10   2



Standing Committee on Research
■ There has been considerable work on shotcrete. ACI Committee 506 has documents with references.

■ This is an interesting project and one that I think is worthy of pursing. The objective of the project is to determine the
  curing practices, long term durability issues, and acceptance criteria of shotcrete that is used for fascia on retaining walls.
  We have often thought that for walls where aesthetics are not important using a shotcrete finish would be a great way to
  save money. However, we have also been concerned about the performance of the face over time. We would rate this
  research project fairly high, since we think it is important and could benefit the state of Texas.

■ eliminate nano work; very costly; little payback

■ The need exist but limited use nationwide.

■ [Rating: 2] Although potentially useful, the proposed research does not address an issue that is considered of national
  importance.
Research Advisory Committee
■ Test methods developed for concrete cannot be directly applied to shotcrete.

■ Should be valuable, and relatively easily achievable

■ Tests referred to running are already available. All that is needed is to write a good specification that requires those tests
  for the mix design and for application acceptance and durability will deal with itself.

■ There has been much debate internally about when and where shotcrete can be used, all relating to the perceived
  durability, or lack of it. The ability to use shotcrete in lieu of conventional cast-in-place concrete can be a good cost
  saver and has already come up on several WSDOT construction projects. We need to get this issue resolved; therefore,
  this project is a high priority for WSDOT. Identifying best practices (hold points, shut down issues, etc.) would be
  helpful.




                                                             IV-73
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings



Item #93:        Development of Automated Pedestrian Detection for
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR        2   1   4    4   4    2

G-02             Intelligent Traffic Management Signal Systems                              (46) RAC    2    1   5   9   13   11   4



Standing Committee on Research
■ This problem statement is very similar to G-25 - although better developed than G-25. Pedestrian detection systems at
  intersections is a worthy concept and should be explored. Vehicle-to-infrastructure communication systems are
  continuing to advance and there is a need for more multi-modal communication systems.

■ Combine with G-25. There would be a serious safety consequence if the detection of pedestrian fails.

■ Similar to G-25. The strategic issues included in this submission are more critical than the technological ones proposed
  in G-25, however, the submitters should be encouraged to evaluate means to combine the two projects.

■ Insufficient justification, extravagance, poor implementation prospect.

■ Support combining this research with proposal G-25 provided that the new project includes Forward Looking Infrared
  and MSSEDCO Intersector (microwave) for evaluation. In addition, add bicycle and pedestrian detection to the study.

■ [Rating: 5] If it is restructured to focus on evaluation of the accuracy and distribution of the pedestrian MOEs capable of
  being measured by the best state of the art sensors. This focus needs to be on what MOEs are relevant to control systems
  for optimization of pedestrian safety and pedestrian operations. 2012-G-02 is tied intimately to G-25, should be a
  predecessor project to G-25 and is worth little without G-25 as a follow on.
Research Advisory Committee
■ Combine with G-25.

■ High

■ Consider breaking up into two projects.

■ Very costly. Considerable information already available.

■ Combine with G-25


Item #94:        Guidance for Curbs Used in Conjunction with Crash
                                                                                                        NR   0   1   2    3   4    5
                                                                                            (17) SCOR        1   2   3    6   4    1

C-11             Cushions and Guardrail Terminals                                           (46) RAC         3   4   8   14   12   4



Standing Committee on Research
■ This is likely has limited applications.

■ This is very important research and should be supported. Currently there is limited direction or guidance on what types
  of curb should or can be used in conjunction with guard rail.

■ Support Phase I funding at this time.

■ [Rating: 2] The magnitude of the problem is not clear, and recent research efforts has related to the dynamic response of a
  vehicle hitting a curb and interfacing barriers behind them. The insights from these efforts may be adequate for agencies
  to assess their design guidance. The proprietary nature of most end treatments and crash cushions suggests a role in
  demonstrating the efficacy of their barriers behind curbs. The FHWA and AASHTO might want to pursue efforts in this
  area to establish a basis for future crashworthiness testing criteria for barrier used behind curbs.
Research Advisory Committee

                                                           IV-74
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ Large number of variables will complicate issue.

■ High We have major questions about curbs interacting with C. cushions and terminals.

■ Urban Street Design Issue (Minor Thoughfares)

■ Problem definiting exists on high speed projects with curb and gutter.

■ Although we have guidance on where we should use curbs, any additional information on this subject would be helpful.
Other
■ [Rating: NR] Rank #5


Item #95:        Overweight Vehicles on Local Roadways: Data
                                                                                                        NR   0   1   2     3   4   5
                                                                                            (17) SCOR        1   2   6     1   3   4

F-06             Collection                                                                 (46) RAC    2    5   2   13    8   8   7



Standing Committee on Research
■ Project concept is of high value but I do not think that 10 roads around the country will be representative. Agree that this
  is an issue best approached "locally".

■ There are better, more efficient ways to get this data through the various permitting programs.

■ Shouldn't pay for installing these devices.

■ Actual project costs are $700K. Agree with NCHRP comment regarding inaccuracies in WIM for enforcement.

■ We support this research. Most towns and smaller cities don't perform formal pavement designs for their roadways as
  they don't have detailed traffic information and don't have the necessary funds to have a traffic study performed to obtain
  the data. As a result towns typically use a minimum design standard or typical section (eg. 12 inches crushed gravel with
  4 inches pavement) and all roads are constructed to this minimum standard. This study could shed some light on the
  actual loads that these roads see and towns could revise their minimum standards accordingly.

■ No data exist, this is needed

■ [Rating: 4] We support this research statement as written. There is not a lot of data on loadings experienced by local
  streets.

Research Advisory Committee
■ The results of this project would not likely be relevant to Alaska.

■ The topic is an important one, quantifying loads on various transportation facilities. I really wish that this problem
  statement was developed to better address the problem. Pavement designers need methods to better characterize traffic
  and it has been shown that the roadway classification is not necessarily indicative of its load bearing requirements. The
  proposers correctly point out that certain commodities (ex. solid waste and construction vehicles) exhibit higher loads.
  The weight data gathered on highways and Interstates vary considerably, depending upon the location, direction and in
  many locations the season. By placing 10 WIM systems at locations where it is known to have heavy vehicle traffic, the
  study will simply demonstrate that non-highway facilities can incur large loads. We know this without installing a single
  sensor. What this type of study could do that would be helpful is to design an experiment that would better characterize
  the commodities and land use and weight distributions to provide a methodology for engineers to upgrade local roads to
  support the system needs and to demonstrate this through a few "representative" locations (if one can truly characterize
  "representative" as results vary considerably by site). Another avenue would be to identify the critical cumulative loads
  (load spectra) where local road designs need to be upgraded and what number and type of trucks can easily result in that
  load spectra.


                                                            IV-75
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Is cost estimate correct? Submitted data says 10 WIM @ $40,000 each + $300,000 = $700,000

■ ODOT needs a flexible WIM contract or in house ability. This research will help define the issues of portable WIM
  equipment and installation. Also ranked 0, maint.

■ The research would be beneficial to help local agencies better understand how to charge fees for damage to their roads.
  But I agree with the NCHRP staff response that this should be done at the local level (not at NCHRP). Since 10 or fewer
  sites are proposed for study (nationally), it seems like this data could already exist somewhere... So while useful, it's
  probably not critical at the NCHRP level & I'm not certain how useful the data will be in providing a solid foundation for
  all local agencies to charge fees (probably would require follow-up studies, since only 10 sites will be studied)

■ It would be extremely hard to create any national profile for a local roadway. This study seems to be focused on urban
  streets. Wisconsin and other states would need a focus on rural roads of varying surfaces, speeds and uses.


Item #96:        Regional Pavement Design Catalogs for Low Volume
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR        1   2   2    7   1   4

C-05             and Local Roads                                                             (46) RAC    1    5   5   9   12   9   4



Standing Committee on Research
■ the work appears useful primarily for new construction. Given most states are maintaining rather than building anew, I
  question the usefulness of the product.

■ We have created in-house low volume road catalogue designs derived from MEPDG.

■ Shortfall of current design process. Majority of DOT's deal with large number of low volume roads.

■ There are catalogs available in most DOTs to design rural roads with low volume traffic with TIs < 9.

■ [Rating: 4] Proposed product would be of great value in circumstances where a site-specific application of the MEPDG is
  impractical. If pursued, should build on ongoing work as noted in our prior comments.
Research Advisory Committee
■ Not perceived to be of much value for Alaska. Finish pooled fund TPF-5(101) first and evaluate potential for broader
  application.

■ Design catalogs are a perfect tool for a quick reference for designing pavement structures. Local roads in small counties
  and municipalities many times require more engineering than larger state roadways. Limited funding and adverse
  existing conditions can affect a cookie cutter pavement design. It can be very difficult to include all individual situations
  in a catalog.

■ Unclear what the methodology will be. Talks about the MEPDG, but also about what other states have which may not be
  mechanistic. Local Roads Issue

■ Not a high priority for MS, but would be of benefit to states that have design responsibility for low-volume roads in
  addition to the primary routes.

■ Very useful for our local partners, if much less so for the State level.

■ Once states adopt ME design, need method for municipalities, counties, etc.

■ States should develop their own catalogs.

■ Would be very helpful to our Local Government Div.
Other

                                                             IV-76
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ [Rating: 1] A national or regional catalog to be used at a local level does not seem appropriate. If a catalogue were to be
  developed it would seem prudent to do this at a local level where the existing experience and performance could be used
  in the development.

■ [Rating: 3] This has been done on a large scale already.


Item #97:        Models for Effective Emergency Responses within "the
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        1   5        3   6    2

G-17             Golden Hour" in Rural Areas                                                 (46) RAC    3    4   7   6    8   11   6



Standing Committee on Research
■ This is a very serious problem due to the prevalence of serious crashes in rural roads and their physical isolation. The
  methods are not well described and the time and costs need to be bumped up a bit to 18 month and $300k.

■ Synthesis of effective practices would be appropriate.

■ Synthesis

■ Promise of draft guidebook, insufficient justification, high cost, poor implementation prospect.

■ Recommend that this research be a Synthesis topic.

■ [Rating: 5] The problem statement reflects some of the critical needs to Tribal Lands as identified by Tribal transportation
  practitioners. The results from this research project will be applicable to many Tribal communities across America.
Research Advisory Committee
■ should be a synthesis study.

■ The premise is the trauma patients have better outcomes if they are provided definitive care within 60 minutes of the
  occurrence of injuries. It is widely accepted and intuitive to follow the rule, but not scientifically supported.

■ Important study.

■ Better suited as a synthesis?

■ This research would likely recommend adding additional resources needs which we already understand the implications
  of.

■ Scope of research is a bit vague


Item #98:        Standardized Equipment Classifications for Improved
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR            3   3    3   6    2

F-05             Asset Management and Data Sharing                                           (46) RAC    2    6   6   8    9   10   4



Standing Committee on Research
■ Timely topic. Agree with NCHRP comments: standardized classification by Wt, HP, cap, other specs will be much more
  useful if records of use, fuel consumption, maint. cost are also standardized. This is a tall order, probably will cost more
  $85K.

■ Perhaps combining F-03, F-04 & F-05 would be useful.

■ This is necessary if you want to compare apples to apples in the fleet business

■ [Rating: 2] The fleet and equipment topics have limited interest to HIAM at the present time. Of interest but not a high
  need.
                                                             IV-77
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

Research Advisory Committee
■ Concur with HSOMn that project is premature pending review of related 20-07 products.

■ Problem statement very similar to 2012-F-03. Cost to retool factories to manufacture new specifications would be costly.

■ There is most definitely a need to 'speak the same language' when comparing fleet equipment. NAFA currently has a
  fairly comprehensive vehicle classification system. FEMA is also compiling one and is very near completion.

■ The bid process in itself utilized by most states lowers prices and dictates changing specifications based on current needs.
  Most states have already standardized their equipment. While perfect competition of substitute goods promotes
  competition, the opportunity costs are enhanced features and technological advances that come from manufacturers'
  incentive to differentiate their products. Most DOTs have explored the aspects of replacement planning and
  maintenance/repair as they relate to overall life-cycle cost analysis.

■ Good potential benefit for equipment bureaus. Should combine F-03, F-04 and F-05.

■ Too many variables between states and fleet operations. Suggest combining F03, 04 & 05 AND waiting until the 20-07
  project is complete.
Other
■ [Rating: 1] Suggest combining F-03, 04 & 05. Also suggest that the 20-07 Roadmap for equipment management be
  completed first.


Item #99:        Mapping Truck Source Heights for Highway Noise and
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR            3   4    6    2   2

B-13             Barrier Analysis.                                                           (46) RAC    1    1   5   11   15   8   4



Standing Committee on Research
■ Proliferating sound walls have become an architectural issue: if Georges-Eugene Haussmann or Robert Moses were
  working today, they would have to take them into account. Perhaps some other branch of NAS would have an interest in
  this topic. Based on the findings of NCHRP Project 08-56, this problem statement appears to warrant funding, though the
  comments of the NCHRP reviewer (research plan written by previous contractor and is too detailed) is excellent and his
  recommendations should be followed.

■ Lowering of the truck noise source will likely lessen the necessary height of a noise barrier to obtain the required noise
  reduction design goal of an impacted receptor. This is positive from a cost standpoint; however, an important factor
  contributing to public acceptance of noise barrier construction is breaking the line of sight to the traffic. Consider
  combining B13 & B24.

■ Appears much of this work has already been done (California)

■ This project should be combined with B24.

■ This problem statement involves obtaining a better understanding of where the majority of heavy truck noise emanates
  from. Current standards assume that a large amount of truck noise is emitted from the top of the exhaust stack. As a
  result, noise barriers are designed with the truck stack as a reference point. Basic field observations, however, seem to
  indicate that noise from heavy trucks may in fact emanate mainly from the tire-pavement interaction. If noise barriers
  were designed to protect from this height, the cost savings for the construction of these walls could be substantial. The
  results of this study could result in updates to the FHWA's Traffic Noise Model (TNM). Updating the TNM will enable
  the states to more accurately predict noise levels on roadways with heavy truck volumes and provide more functional and
  cost-effective noise abatement to adjacent property owners.

■ Could be used in tandem w/ QP3

■ The current vehicle database used in the FHWA Traffic Noise Model (TNM) is based on the early 1990 fleet population
                                                            IV-78
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer         Comments                                                                               Distribution of Ratings

  and needs updating --- with this research. The recent change in federal code (23CFR772 -- will be implemented in July
  2011 ) favors the construction of more soundwalls and mandates the use of the FHWA Traffic Noise Model. The noise
  calculations in the current model are incorrect and will cause more sound walls to be constructed. This is the highest
  priority research among the four noise proposals (B-13, B-19, B-26, B-24).

■ [Rating: 4] This problem statement is a continuation of NCHRP 08-56 and is desired by state highway agencies to
  accurately determine source heights for heavy trucks in noise models and therefore appropriate noise barrier heights.
Research Advisory Committee
■ Interesting but not all that helpful.

■ May be important elsewhere-not very relevant to Montana.

■ This is a follow-up to previously funded NCHRP research and NCHRP is the ideal venue for this research because of the
  cost and timing afforded by a full NCHRP project. 3. The results of this project could affect every noise study done in
  the US. No similar projects are underway. The project is the planned 2nd phase of previously funded NCHRP research.
  High probably of success. Researchers demonstrated high quality products during phase 1. The anticipated results are the
  confirmation of lower truck noise sources heights. The affect of this finding could have a very high cost return as it
  would result in lower noise walls across the country.

Other
■ [Rating: 2] The Committee believes this research could produce useful information including a more accurate estimation
  of necessary wall size and potentially reduce costs.


Item #100:        Integrating Real-time Detection of Pedestrians in
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        2   2   2    5   3   3

G-25              Crosswalks into Adaptive Signal Timing Systems                            (46) RAC    2    5   4   6   15   9   4



Standing Committee on Research
■ This is an interesting idea, but the project is essentially development of a new product. This seems like something that
  would be better served through the private sector than an NCHRP project. This is very similar to G-2 and G-2 is
  preferred.

■ Combine with G-02. There would be a serious safety consequence if the detection of pedestrian fails.

■ G-02 preferred, but two proposals could be combined.

■ Excellent and timely research need, especially with the MUTCD 2009 mandate for extended pedestrian clearance
  intervals. Should be coordinated with the current research in Great Britain. Research needs to cover the possibility of
  pedestrian clearance and truncation, pedestrian head placement and pedestrian clearance interval indication. Draft
  language for the MUTCD needs to be prepared and presented to the NCUTCD.

■ Support combining with G-02 provided that new project includes Forward Looking Infrared and MSSEDCO Intersector
  (microwave) for evaluation. In addition, add bicycle and pedestrian detection to the study.

■ [Rating: 0] This problem statement can't work without 2012-G-02. It cannot be done without a thorough knowledge of
  what pedestrian MOE’s can actually be accurately measured in the real world that are relevant to treating pedestrians
  along with motorized vehicles in the signal transition logic of traffic controllers. The project should be refocused on
  creating and testing a revised open source implementation of signal transition logic to add pedestrian MOEs. After
  successful completion of G-02, this score would jump to a 5.
Research Advisory Committee
■ Combine with G-02.

■ This is a current problem that needs to be researched. It is appropriate for NCHRP and has nationwide interest. The
                                                           IV-79
PART IV: Summary of Comments                                                                                                  13-Apr-11
Reviewer          Comments                                                                                   Distribution of Ratings

  probability of success is good, and the anticipated return with respect to its cost is high.

■ High priority

■ Very similar to G-02

■ Project G-02 would need to be completed previous to this project.

■ Combine with G-02

■ Video dection systems and other types of dections systems exist and are in place even in our own Olympia. The research
  objectives may need to be expanded.


Item #101:        Study of Vehicle Paths on Horizontal Transition Curves
                                                                                                             NR   0   1   2    3   4   5
                                                                                                 (17) SCOR            1   5   7    4

C-02                                                                                             (46) RAC    2    2   6   9   15   9   2



Standing Committee on Research
■ Not a high priority. Problem statement assumes that there is a problem with the different transition strategies, when none
  has yet been documented. More work needs to be done to establish problem prior to doing this project.

■ We currently use one of the methods being studied. We have not had a problem with our method but would be interested
  in seeing the research findings from this study.

■ [Rating: 3] A revised problem statement is needed that provides more justification, conducts a critical review of the
  literature, considers of possible research approaches (e.g., vehicle dynamics analysis, driver behavior tests), and looks
  into inappropriate speeds and lack of attention as more specific causes of crashes. Additional proposed evaluation metrics
  may help to better clarify the expected outcome of this proposal.
Research Advisory Committee
■ The proposed research objective is going to cover the literature research on this topic. A vehicle path on horizontal
  transition curves is a function of vehicle speed and road geometry. The proposed research has potential payoff but is not
  an urgent research subject to be studied.

■ Essential - We need guidance for Green Book. Supported by AASHTO and TRB

■ This topic has been research thoroughly. I don't anticipate any new findings to emerge.

■ Too much money for a lit review.

■ Description of "need" is weak and not well supported


Item #102:        Information Clearinghouse for Utilities
                                                                                                             NR   0   1   2    3   4   5
                                                                                                 (17) SCOR        2   3   2    5   2   3

D-23                                                                                             (46) RAC    1    6   4   5   13   8   8



Standing Committee on Research
■ There is currently no information clearinghouse that allows practitioners to easily exchange or otherwise access a wide
  array of utility-related resources. Many stakeholders would benefit greatly from a national clearinghouse that stores and
  organizes this type of information. Proposed budget seems a little high.

■ Cost $300,000 is too much.

■ Good way to bring consistencies into the utility process


                                                             IV-80
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Data collection and effective record management are central to this program area

■ [Rating: 3] This research proposal should be considered the highest priority of all of the utility related research proposals
  for 2012. Currently there is no clearinghouse or electronic venue for public agencies, highway contractors, utility
  companies, and consulting firms to interact, access and share successful practices related to the administration,
  accommodation and/or relocation of utility facilities. Due to the diverse backgrounds of these different groups, an
  industry neutral clearinghouse is needed, which crosses organizational boundaries to focus entirely on utility related
  issues. This proposal supports the theme and focus of the FHWA Every Day Counts initiative.
  Need identified is important, but the project appears to be at least partially duplicative of SHRP2 R01A and at the very
  least should build upon its result.
Research Advisory Committee
■ This research will develop a plan that allows practitioners to easily share, exchange, and access a wide array of utility-
  related resources at a central location.

■ research should include summary of each state's practice with respect to permitting/location fees and reimbursement for
  relocations within and outside of the highway ROW

■ This is a great idea but could be combined with D-21

■ If selected, agree that initial cost of $300,000 is high and would recommend a reduced funding level.

■ Plenty of information is available, if you know where to look.

■ Same comment listed for D-21

■ A national clearinghouse would be beneficial, but it should be noted that state DOTs do have a similar resource in
  AASHTO's Technical Utility Council. This group functions more as a network for such information rather than a
  clearinghouse, but the purpose is similar
Other
■ [Rating: 0] No need

■ [Rating: 2] Difficult to do on a national scale.


Item #103:       Cost-Effectiveness of Construction Ride Specifications
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR            1   7    6    1   2

D-20                                                                                         (46) RAC         4   2   14   13   7   5



Standing Committee on Research
■ Very few states have looked at the payback on ride specs. They need this study to defend their programs.

■ See TRB comment.

■ The NCHRP review notes that there is an on-going project similar to this.

■ if combined with D-14; otherwise 1

■ Unlikely to produce a product that is able to accurately define real benefit.

■ Consider combining with D-14.

■ [Rating: 4] Information developed would be valuable to agencies in setting appropriate incentives/disincentives for ride
  quality.
Research Advisory Committee
                                                            IV-81
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ The proposed study represents a current problem that needs researching. It is appropriate for NCHRP, and it is of
  nationwide interest. However, Amir Hanna's comments indicate that the proposed research is expected to be addressed in
  an ongoing NCHRP project. Amir suggested postponing a decision until NCHRP Project 10-79 is completed in mid
  2011. This suggestion seems reasonable and should be heeded. Therefore, while this reviewer rates the proposed study
  as high, perhaps consideration should be given to Amir's suggestion.

■ This project is complementary to D-14, and is needed. Recommend combining.

■ Concur with NCHRP reviewer

■ Delay until outcome of NCHRP 10-79 project is known

■ Minimal return for effort.

■ This research would also answer questions raised in D-14.

■ Wait until NCHRP 10-79 is released

■ Would help provide balance with sustainability concerns (ride = mpg)
Other
■ [Rating: 3] Although at a state level we would rate this a “10” at a national level we are concerned this would not result
  in useful information. The only true value that can be assessed is on the agencies own system. A national study could
  incorporate case studies (of different states) that could elucidate the subject, but it would be very difficult to develop
  meaningful relationships. The state’s PMS and bid item costs systems have to be used to develop the true cost and true
  value of the smoothness. In addition, the state’s need to factor in the total impact on bid item cost of the
  incentive/disincentive. That is, a viable incentive/disincentive system provides a benefit to the quality contractor who
  can bid lower knowing they are going to attain the incentive. Thus, the incentive is not a true cost since it was already
  accounted for in the bid price. All these factors must be considered into arriving at the benefit cost picture, and this likely
  cannot be done effectively at a national level, particularly at the budget level indicated.

■ [Rating: 5] This is an excellent idea for a study as often times, smoothness specifications are made more difficult with
  little or no justification.


Item #104:       Safety Issues on Complex Freeways
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR        2   1   2    7   4   1

G-13                                                                                          (46) RAC    1    3   4   8   19   8   2



Standing Committee on Research
■ very relevant to VDOT, especially with HOT lanes development in DC 15 months do not seem enough for this.

■ Combine with G-15. Recommend to fund Phase-I only after combination.

■ Sounds interesting but I'm not sure this study would relate to NH.

■ Objectives are very robust and may be unrealistic.

■ [Rating: 3] Consider combining G-13 and G-15 since both investigate the complex freeways cross sections found in
  urban settings. This potential joint effort can build upon the Highway Safety Manual freeway crash prediction
  methodology being developed under on-going NCHRP 17-45 project.
Research Advisory Committee
■ AK freeways aren't "complex"

■ The payoff of this research can affect a project's design, safety, and cost. Payoff potential is anticipated by allowing

                                                             IV-82
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

  transportation officials to be better stewards of transportation funding. This proposal will evaluate collision trend
  analysis and data collection to understand causes of collision problems. This research can identify and evaluate
  engineering strategies for use as countermeasures, policy & guidance to make better choices.

■ Combine with G-15 as proposed for a Ph. I cost of $400,000 over 15 months

■ High - We use more of the roadway for capacity and need to know safety effects

■ I would rate this no higher than a “3” since it seems to be more related to designs that we do not have around here. It
  would be nice to know for future trends when making a decision on alternative designs from a safety perspective, but we
  do not have the real estate and environmental support for expanding our systems in Massachusetts.

■ Speed Limits / truck traffic / interchange spacing and excessive widths with no spacing improvements - Consider joining
  with G15

■ Question whether this work can really be done for $300,000.

■ Given the small geographic coverage of this study (10-12 metro areas and 12 rural corridors), this might be best suited
  for a pooled fund.


Item #105:       Identify or Develop a User-Friendly, Transferable
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR            3   6     2   2   4

B-20             Approach or Tool to Measure Long-Term Local Supply                          (46) RAC    1    3   6   14   10   6   5

                 and Demand for Compact, Mixed-Use, Transportation-
                 Efficient Development
Standing Committee on Research
■ The results of this project (a tool) could provide transportation planners with information and support for better corridor
  planning and transpiration / land-use coordination.

■ Local development practices are up to the locals??

■ Incomprehensible title.

■ There is a disconnect between decisions made about land use development and transportation investments. Providing an
  approach or tool to bring these two closer together would be beneficial in helping to address GHGs and livable
  communities.

■ I don't see how this helps; market research is pretty site specific

■ desirable goals; success is low

■ Extremely valuable. The relationship between land use and transportation planning is a widely touted, but the practical
  tools to understand it or implement it are not that prevalent yet. During the climate change meeting, we discussed the
  need for relating and/or influencing preferences related to TOD, reducing VMT, etc. This proposal is to study market
  preferences, however it is not clear if recommendations will be made on understanding economic ROI. MAG is doing a
  sustainable land use study that may relate.

■ This research will develop and apply tools/methods to measures supply/demand for transportation-efficient development
  to improve transportation investments, planning, etc.

■ [Rating: 4] This research topic is interesting and research in the subject area particularly with respect to supply, demand
  and willingness to pay for sustainable development have made this research project very attractive. This proposed project
  contains three major components that include identification of key factors, the development of approaches to quantify
  these factors, and the development of user-friendly and transferable tools. The data collection for estimating the

                                                             IV-83
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings

  demand/supply and willingness to pay may become major barrier for this project. I believe to be successful, the project
  needs to collect data from developers or other private proprietary data sources in order to estimate coefficients.

Research Advisory Committee
■ Positive reviewer comments.

■ I don't think this adds value that already is not in the private market.

■ Poorly defined.

■ Consistent with MDT Toolkit recommendations

■ ODOT does not try to influence local land use planning matters.

■ The connection between urban form and transportation is important to understand. However, this particular study of
  supply and demand may be more appropriately conducted by the real estate industry (Brookings is doing some of this
  work now).
Other
■ [Rating: 4]


Item #106:       Evaluating the Safety Benefits of Pavement Preservation
                                                                                                          NR   0   1   2    3   4    5
                                                                                              (17) SCOR    1   1   4   3    2   5    1

F-07             Treatments                                                                   (46) RAC     4   4   4   7    9   12   5



Standing Committee on Research
■ It sounds like a life cycle analysis focusing on safety and operational aspects. The title should include "Safety and
  Operational Benefits." Collecting data to draw meaningful conclusions would take a while. Thus, the budget and duration
  seem short.

■ I do not believe a study like this can be completed in one year.

■ This research would be interesting to see if there is a correlation between pavement treatments and safety.

■ This would be difficult to do on a national level. There is limited safety data to support this study.

■ [Rating: 3] Capturing sufficient, detailed data due to changing traffic and work zone conditions to enable a valid,
  statistically significant finding would be difficult within the proposed budget and period of performance.
Research Advisory Committee
■ The placement of a preservation treatment is a quick process in most cases. They require less road closers, excavation,
  and user delays. This is a major attribute, along with increasing the rehabilitation timeline. The less interruption in
  traffic will only produce better safety issues automatically.

■ I would rate this one as a “3”. Would be nice information to have, but pricing and ability to perform the maintenance
  would be the driving factor. As it relates to safety in the work zones, I don’t know that having exposure of workers for a
  number of times would be safer than one time.

■ This project does not evaluate the safety benefits from the treatment, only the safety issues related to preservation
  construction vs. rehab/reconstruct.

■ Mississippi is reported to have a high number of accidents and deaths in construction zones. If we do pavement
  preservation treatments we can shorten the overall time traffic is bothered with construction, and in addition the
  treatments are less destructive. The more ammunition we have the easier it is to get buy in on Pavement Preservation.


                                                             IV-84
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer         Comments                                                                               Distribution of Ratings

■ It would be beneficial to have documented safety data, especially for treatments we are not as familiar with.

■ The intuitive conclusion is sufficient.

■ Too hypothetical and subjective. We know what the safety benefits are.

■ life cycle: yes, safety: no
Other
■ [Rating: 4]


Item #107:       Impact of Travel Time Messages on Crashes and
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        1   3   5    5       3

G-24             Congestion                                                                 (46) RAC    1    6   3   7   10   9   9



Standing Committee on Research
■ very relevant to VDOT, especially given recent MD experience. Should be expanded to all messages, not just travel
  time. This would build off of Demestky and Schroeder's findings in VA, which were based on limited samples.

■ Travel time messages can be expected to improve operations and safety, not decrease it. If such a study is undertaken,
  the research needs to provide guidance on how the current messages may be improved, updated and altered dynamically
  to reflect current drive time conditions etc.

■ [Rating: 2] This study aims to look at crashes and congestion around CMS but not at potential causes of the slowing
  (such as font/legibility issues) which is the greater issue.
Research Advisory Committee
■ This proposed study needs researching. CMSs are appearing all over the country displaying travel time messages and
  little or no research has been done to evaluate their impact on crashes and congestion. It is appropriate for NCHRP, as
  most or all state departments of transportation are using CMSs at this time. Therefore, each state will benefit from its
  funding allocation. This does not appear to duplicate research elsewhere. It has a reasonable probability of success. The
  return will be very good with respect to its cost because better decisions can be made regarding what is posted on the
  CMSs.

■ I rated this a five because it could be a Life-Safety issue

■ Intuitively we know using our CMS too frequently can distract drivers. Other than anecdotal evidence there is very little
  research out there that supports this. This research could help us form our VMS Use Policy and give us evidence we need
  when we turn down certain requests to run PSAs and other messages, as well as help us know if posting travel times is a
  help or hindrance.


Item #108:       Lane Line Markings in Advance of Lane-Reduction
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        2   1   4   5    2   3

G-08             Transitions                                                                (46) RAC    3    5   4   7   17   5   4



Standing Committee on Research
■ This has limited applications. The timing is odd; the 2009 MUTCD adopted a new marking pattern for lane reductions.
  Now a study is desired to determine the new pattern's effectiveness.

■ This might be a function of the "cat is already out of the bag" as the 2009 MUTCD already requires these markings.

■ This is a need. Richard Moeur also added this was a critical need and I'll take that emphasis.

■ [Rating: 5] There currently is not any research looking at if drivers understand the dotted lane marking as an indicator of
  lane reduction transitions.
                                                                IV-85
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings


Research Advisory Committee
■ Need to understand driver interpretation of lane line markings in these circumstances

■ This proposed study represents a current problem that needs researching, but it rates medium compared to others
  evaluated. The problem is of nationwide interest; success may be achieved, but it is likely the return would be small with
  respect to its cost.

■ The use of mini-skips (or dotted lane lines) is the current standard in North Carolina


Item #109:       Planning and Preliminary Engineering Applications
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR        2   3   2    4   5   1

G-12             Guide to the Highway Capacity Manual                                        (46) RAC    3    4   2   8   17   8   3



Standing Committee on Research
■ Could be a useful supplement for people involved in planning applications of the HCM

■ This guide will help the modeling community be consistent in the definition of capacity, Level of Service and the overall
  application of the Highway Capacity Manual in planning level analyses. It will also help identify the right time to use
  simulation models.

■ An interesting and useful expansion to the existing Highway Capacity Manual.

■ The project is of high importance but could be delayed one year for practitioners to become more familiar with the new
  Highway Capacity Manual. This would allow users time to identify additional shortcomings needing to be addressed.

■ [Rating: 4] These are good uses for the HCM. The approach of developing sample problems to be solved is a practical
  one. The “guidance is needed for three common issues that go beyond the scope of the 2010 HCM” is out of scope for
  the topic of developing an applications guide for the HCM and should be submitted as a separate topic focusing on how
  to address those three issues.
Research Advisory Committee
■ The product of the research would be a guide that would act as an educational tool.

■ Will go a long way in providing useful guidance to highway agencies. This will fill a void in guidance instruction for
  HCM planning procedures that doesn't exist in any other document.


Item #110:       Standards and Specifications for Utility Data
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR        2   2   3    6   1   3

D-21             Submissions                                                                 (46) RAC    2    6   5   7   11   6   8



Standing Committee on Research
■ It would be more useful to develop the actual GIS database for the amount of funding requested.

■ Millions of dollars and thousands of hours are attributed to utility impacts and delays annually. It is incumbent that a
  standard system and standardized data exchange protocols be explored, proposed, and adopted for addressing this serious
  infrastructure management problem.

■ Could be useful but would be difficult to populate with data since the utility companies have this info. Also difficult to
  verify accuracy of data.

■ Improving the quality of the data and the S & P for utility data submission will have direct positive impacts on project
  development and construction in terms of delivery time, quality of our projects, cost savings and public safety.

■ [Rating: 3] This proposal should be considered a very high priority. The development of a concept of operations,
                                                            IV-86
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

  requirements, and development of a proto-type of the proposed utility data model and protocol for the data to be
  exchanged between agencies and utility interests is a priority need to address gaps in current practice. This research will
  provide a consistent model that could be developed and implemented in each state to ensure consistency with the data
  and how it is captured, shared, and warehoused. This effort would also ensure that other required standards in practices
  (e.g., GIS, location referencing system coordinates) will be integrated into the model and guidance to be developed.
  The issue identified is important. Pertinent SHRP 2 Research should be referenced and considered in developing the
  RFP.

Research Advisory Committee
■ Recommend for synthesis, including a survey measure of utilities' willingness to share data.

■ Unsure about the feasibility of this data being standardized on a national basis.

■ The utility issue is a nationwide problem, but I think the problem statement should be rewritten and combined with other
  problem statements

■ Critical to know what is in the R/W & where it is located (X, Y & Z).

■ Since UDOT recently did a state research project that incorporated some of these concepts it would be great to expand
  into this national approach. This is closely tied to D-23.

■ It would be helpful if the research also focused on how such a system can be effectively implemented, managed and
  coordinated between highway agencies and utility companies

Other
■ [Rating: 0] No need


Item #111:       Development of a Procedure for Predicting Traffic
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        1   2   4   6    3   1

G-10             Capacity in Work Zones                                                     (46) RAC    2    5   4   9   12   7   6



Standing Committee on Research
■ This is very similar to G-20 (seek guidance on estimating work zone capacity); G-20 is preferred. See G-20 for details.
  There is a high need for this. There are several methods for estimating work zone capacity. Both develops a new
  method. Predicting traffic capacity in WZ is a crucial element for developing and assessing TMPs.

■ We already have an abundance of good tools to use in this area already: VISSIM modeling, CA4PRS, Quickzone,
  FREQ....

■ Consider combining with G20

■ Combine with G-20.

■ Similar to G-20

■ Much research already published on topic

■ Recommend combining this research with G-20. Caltrans has a procedure for addressing this issue.

■ [Rating: 5] The subject of this Problem Statement is very similar to that of Problem Statement G-20 (Guidance on Work
  Zone Capacity Estimation and Simulation) and our recommendation is that it be integrated into Problem Statement G-20
  because that Statement is more comprehensive in describing the need, research objective, and literature review.
Research Advisory Committee
■ No Comment

                                                            IV-87
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Suggest combining this with Problem No. G-20.

■ This is addressed by the FHWA Work Zone Safety and Mobility Rule.

■ Seems like this has been accomplished through previous efforts such as QuickZone.


Item #112:       Pilot Application of Demand-Operated Part-Time
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        1   2   5    5    1   3

G-27             Traffic Responsive Traffic Signal (DOPTT) at School                         (46) RAC    4    5   1   10   17   4   4

                 Intersections along Rural State Highways
Standing Committee on Research
■ I know this is a concern in VA, but I am worried that these results could open the door to large numbers of rural schools
  requesting traffic signal installations. This could be a very large burden on VDOT that could be adequately addressed
  using crossing guards. Based on the RPS, the technology has already been successfully piloted in MD. From other
  sources, MSHA has also developed guidelines.

■ The study is worth while, however actual implementation may be cost prohibitive

■ Devices of this nature are being requested (demanded?) at several locations where the demand is for a very short
  duration. Developing a specific warrant for this condition would assist agencies in dealing with such requests. Maryland
  has developed guidelines that could provide a template.

■ The MUTCD already has guidelines for such types of semi-actuated signal operations for industries and schools to be
  installed at their expense. The warrants are flexible enough to allow such operations as needed when the situation
  demands. In lieu of the State placing traffic control devices to facilitate special interests, the group requesting priority
  access to the state highway should consider altering their begin and end shift times so as to not conflict with the highway
  peak hour(s) to reduce congestion or hire flagpersons for the event as contractor’s are required to do, like heavy truck
  crossings. It is best to use the already approved TCDs in the MUTCD.

■ This study may be used to circumvent signal warrants and may conflict with other regulations.

■ [Rating: 2] This is a TCD issue dealing with need for signals at school driveways onto highways, where signal warrants
  are not met. We believe this is not a priority.
Research Advisory Committee
■ Could have application where schools and NHS highways cannot be segregated.

■ Seems expensive.

■ This technology is used in many cities in Washington for transit and emergency vehicle priority. This research objective
  may need to be expanded or re-evaluated as the research objective does not completely address the problem statement.


Item #113:       Advancement of Accelerated Bridge Construction
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        1   1   6     4   2   3

C-12             (ABC) in Moderate-to-High Seismic Regions                                   (46) RAC         4   7   13   10   6   5



Standing Committee on Research
■ Accelerated bridge construction is very important but seismic issues are local.

■ Not of much interest to this region.

■ Most recent connection details being used on ABC projects have not been fully tested for seismic performance and they
  lack the history of long term performance.

                                                            IV-88
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings

■ The challenge of Accelerated Bridge Construction (ABC) in seismic regions affects at least 36 of 50 states. The systems
  developed in this research will be usable in all 50 states. An added benefit of development work on Seismic ABC
  systems is that such systems may address other extreme events, such as vessel impact, blast, or other loadings not
  addressed by design for gravity load alone.

■ [Rating: 3] Research to develop seismic connections for ABC has lagged behind conventional connection research and
  needs to be funded. However, this problem statement appears to be duplicative to the $400k FHWA Highways for LIFE
  Technology Partnerships Program project with Berger/ABAM.
Research Advisory Committee
■ Alaska uses ABC. Consider including Alaska as case study for high seismic zone.

■ Connecticut, along with many other non-earthquake prone states, would not find this work to be relevant.

■ Moderate need in MT

■ No benefit to Ohio. State specific.

■ Regardless of the quality of the research construct, this is not appropriate for a national initiative. The abstract notes that
  36 states "could" have bridges in the moderate-to-high seismic regions. This is much more suited for pooled fund
  research.


Item #114:       Education and Messaging for Road Pricing and
                                                                                                           NR   0   1   2    3   4   5
                                                                                               (17) SCOR        3       3    6   4   1

A-02             Distance-Based Fees                                                           (46) RAC    1    6   6   9    7   8   8



Standing Committee on Research
■ People talking to/employed by some lobbies will call this research naïve, but it's necessary, proactive, and useful to
  practitioners. Bad job but somebody has to do it, and sooner better than later.

■ This sounds very worthwhile in that it doesn't look to re-invent the wheel but instead provides a tool to effectively
  communicate DBF. This will become increasingly important as the traditional gas tax loses it's impact and ability to
  generate revenue.

■ Seems that this research project is an attempt to take a complex policy debate issue and simplify it into a "sound bite"
  campaign to garner support for a predisposed outcome for the project's sponsor.

■ timely proposal w/ national interest; aligns with local interests to further explore HOT and toll pricing strategies.

■ [Rating: 4] This carries the research forward and complements work such as NCFRP 29 that examined how to
  operationalize these mechanisms. It is a needed next step.
Research Advisory Committee
■ Premature.

■ There is no sense developing a VMT finance system if the message cannot be conveyed successfully to the taxpayer.
  Study is extremely timely to understand the audience and how to convey message.

■ Suggest combining concepts from A-02, A-03, and A-04 into 1 study looking at benefit of alternative transportation
  infrastructure funding sources and required info/strategies for their successful implementation.

■ The questions outlined in the research objective section are vital questions for which we need answers. However, we do
  have some concerns that the approach outlined in the research problem statement may be too broad; it may be more
  beneficial if the research were to focus on one or two countries that have a social and political framework similar to that
  of the US. Also, for the questions outlined in the research objective section, it would be beneficial to include some

                                                             IV-89
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

  questions that would explore the different issues faced by rural and urban areas.

■ Don't see the value of this research at this time based on work already completed at the National level.

■ Not appropriate for research funding.

■ Agree with the review by Andrew Lemer that this research is premature absent a specific national initiative to be
  proposed on road pricing.


Item #115:       Field Evaluation of Reflected Noise for Sensitive
                                                                                                        NR   0   1   2     3   4   5
                                                                                            (17) SCOR        1   3   5     2   5   1

B-19             Receptors Across from a Noise Barrier                                      (46) RAC    1    3   5   11   14   6   5



Standing Committee on Research
■ The statement outlines a common problem experienced by states constructing noise walls. The research objectives seem
  to outline a good strategy for addressing this issue.

■ This problem statement is intended to address the increasingly common problem of noise barrier reflection on properties
  on the opposite side of a roadway from an existing noise barrier. Much of this problem may be the result of barrier envy.
  This problem statement attempts to gain a better understanding of actual and perceived barrier reflection and to provide
  recommendations as to when the use of absorptive barrier materials may be necessary. This would be particularly useful
  information when the insertion of a barrier would still not result in noise levels on the opposite side of the roadway in
  excess of a state's noise abatement criteria.
  The problem statement also includes a component which would update the FHWA's Traffic Noise Model (TNM). The
  current model does provide a tool for including noise barrier reflection in the overall noise level calculations; however,
  this tool is very basic and would benefit from an update to enable states to more accurately predict highway traffic noise
  and provide more effective noise abatement to adjacent property owners.

■ Could be used in tandem w/ QP3

■ [Rating: 4] This is an issue of interest to several State highway agencies as they determine requirements for provision of
  absorptive treatments to noise barriers.
Research Advisory Committee
■ Broader analysis of B-13 may be good. Would be helpful.

■ The problem is of national and international interest. Additional knowledge of barrier reflections will increase the
  effectiveness of noise wall design, which will reduce complaints and the need for more costly future retrofits. Some
  smaller studies and papers have been done in the past that will serve as the foundation for this research. There is a high
  probability of success. Monitoring sites are readily available. Funding is the only challenge and can be resolved through
  this research. The expected results are more effective noise wall design that reduces citizen complaints.
Other
■ [Rating: 3] The Committee concluded that the study could benefit states through cost savings, and be helpful when
  discussing perceived noise levels with the public. The information is not duplicative and does not overlap with current
  research. The results of the research would be beneficial to the states and the Committee supports its goals.




                                                           IV-90
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings



Item #116:       Improvements in the Design Storm Approach for
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        2   1   5     3   4   2

E-07             Estimating Peak Flows                                                       (46) RAC    1    3   9   10   11   5   6



Standing Committee on Research
■ It is not clear how the results of this will be implemented. This problem has been brought forward for a number of years
  and is clearly in need of being addressed. The objectives of the research need to be strengthened; hard to rate it higher
  than a "2" without some estimate on the cost of performing the research.

■ Seems like a good research idea

■ Any improvements in hydrologic determination of peak flow magnitudes is a plus.

■ The problem statement is not well defined and is unlikely to produce results in it's current form.

■ [Rating: 3] A clearly needed research study. The additional information provided by the submitter helps clarify the focus
  and intent.
Research Advisory Committee
■ Problem statement not adequately developed.

■ Highly recommended. An important need.

■ This would try to improve deterministic methods for hydrologic prediction

■ No need for Ohio.

■ The proposed study is appropriate for NCHRP. Properly analyzed hydrological analyses are essential to a meaningful
  hydraulic analysis and peak flow estimates are the most used variable in highway conveyance design. Current guidance
  recommends selection a peak design flow that factors cost and risk, with appropriate levels of conservatism if there are
  foreseen changes in the watershed. The problem statement may be more beneficial if there was more focus on cost vs
  risk (i.e. is a 25-yr storm appropriate).


Item #117:       Two-Lane Highway Safety and Operational Performance
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        1   1   5     7   2   1

G-11                                                                                         (46) RAC    1    5   4   11   14   4   6



Standing Committee on Research
■ Tools already exist to do operational and safety analysis of two lane roads. This would seek to create an integrated
  operational/safety model, essentially re-packaging or supplementing exiting work. This would not be a high priority,
  especially with a $1M price tag. Usefulness to practitioners is questionable. For 2-lane roads, detailed data are not readily
  available and if such data are not already in agencies' database, any tools or methods requiring detailed data would be not
  used because collecting those data requires considerable resources and agencies are not likely to do that.

■ This is not clearly explained, and what type of environments are we talking about

■ The problem statement does not clearly state the problem. The research does address a need, however the objectives and
  deliverables need to be better defined.

■ Some of the statements are exaggerated. Budget seems to be on much higher side.

■ Suggest that the first 2 tasks are conducted as a Synthesis.

■ [Rating: 2] This study may offer a candidate for visualizing the data produced for analysis. However, the problem

                                                            IV-91
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

  statement needs more detail.

Research Advisory Committee
■ There is no defined problem statement. Implementation and deliverables are not defined.

■ Two Lane Road safety is still critical to our efforts to curb fatalities and injuries. Not convinced this concept/approach
  will be able to yield strong enough product.

■ Two lane operational analysis methodology has been neglected for decades, yet it is the most common type of highway
  compromising the vast majority of highways in the US. Several years ago an attempt was made to improve the
  methodology, but it was based entirely on what is now an obsolete computer program. A new realistic method based on
  real work data and MOEs needs to be developed for inclusion into future Highway Capacity Manual updates.

■ not clear what is to be done and why it needs to cost $1m.

■ Too broad

■ Too large of a project


Item #118:       Improving Utility Construction Inspection Practices
                                                                                                         NR   0   1   2    3   4    5
                                                                                             (17) SCOR        1   5   2    4   2    3

D-22                                                                                         (46) RAC    1    5   8   5   11   12   3



Standing Committee on Research
■ I suggest combining this topic with D-21.

■ There is great need to obtain information about utility inspection procedures, inspection tools and training courses. This
  type of information about best practices could be implemented immediately and would result in better inspection work,
  lower costs, fewer sequencing conflicts, and better as-built plans. Proposed budget seems a little high.

■ We agree that a literature review needs to be included in the scope of this research. Not clear if any past research has
  addressed the inspection needs of utility relocations. In any event, a compilation of best practices from across the country
  would be helpful.

■ Critical component to strengthen adherence to Utility Agreement, transparency, cost reimbursement and reduce or
  eliminate liability.

■ [Rating: 4] Providing tools for adequate oversight are increasingly difficult, and the proposed activity would capture best
  practices and document them, subject them to peer review and enhancement, and lead to more consistent and
  standardized inspection practices. The data gathering and peer vetting described here should be a fairly short-term
  process, leading to near-term implementation opportunities and payoff in quality control for both highway agencies and
  utilities themselves. This research directly supports the current focus on the FHWA Every Day Counts initiative related
  to the use of innovative construction methods.
  A potentially valuable contribution to improve project delivery.

Research Advisory Committee
■ If improving Utility Construction Inspection Practices are to be truly successful, the investigators need to address the lack
  of communication between the utility company and the state/local town inspection departments. My experience on a
  complete full-depth construction roadway job of a local town (paid by state DOT) was the blatant disregard for planning
  their utility construction projects. The utility company didn't coordinate their utility work until our top surface of
  pavement was laid on our project (which had a time frame of two years to completion). The utility company dug up our
  new pavement, stating that their work was an emergency. If state DOT and local towns don't make an emphasis on
  coordinating their upcoming construction jobs with utility companies, the lack of inspection oversight will continue.
  Communication between state DOT, FHWA and local towns must be a priority.


                                                            IV-92
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ Is topic being addressed by current SHRP2 efforts?

■ This is a great idea but could be combined with D-21

■ Important, but not critical to today's operations.
Other
■ [Rating: 3] There is a need for knowing about proper utility installation, short of it works. There is also the issue of
  accurate as built plans.


Item #119:       Guidelines for a Comprehensive Preventive
                                                                                                          NR   0    1   2    3   4   5
                                                                                              (17) SCOR        1    3   2    5   4   2

F-02             Maintenance Plan for Tunnel Owners and Operators                             (46) RAC         10   4   8   10   9   4



Standing Committee on Research
■ This is an issue for VDOT with our water and mountain tunnels. Comprehensive guidance would be very valuable.

■ [Rating: 4] The results of this project would be of great value to FHWA and AASHTO, and would continue the current
  momentum in the tunnels area with the pending regulation, operations manual and coding guide. Coordinate with
  FHWA. Consider funding at $300k for 24-30 months based on deliverables.
Research Advisory Committee
■ FHWA should incorporate this Preservation/Asset Management scope into their TOMIE manual effort.

■ FHWA is developing a manual for best practices for tunnel operations, maintenance, inspection and evaluation.
  Duplicating FHWA work at this point is not recommended.

■ MS doesn’t have tunnels.

■ Low priority for Montana due to our limited tunnels.

■ As this relates to scour potential, it could be useful, but the proposal does not appear to be focused enough on any
  particular issue.

■ Need this info for tunnels that are the most expensive components of the transportation infrastructure.
Other
■ [Rating: 5] # 2 priority of the Subcommittee on Bridges and Structures

■ [Rating: 3]


Item #120:       Assessing Influences of Roadway and Roadside
                                                                                                          NR   0    1   2    3   4   5
                                                                                              (17) SCOR        2    2   2   6    3   2

G-28             Attributes on Driver Behavior, Speed Management, and                         (46) RAC    2    4    8   9   13   5   4

                 Safety
Standing Committee on Research
■ Measuring contextual influences on speed could yield benefits, but using website -based virtual reality scenarios to test
  driver discomfort may not be a sensitive enough tool. Maybe this should be a pilot to evaluate the validity of the method
  before proceeding. $200k

■ Good topic, but not written well. Also, budget seems to be on lower side.

■ FHWA is currently conducting a study that should be evaluated prior to beginning this study. Suggest combining this
  research with G-14.
                                                            IV-93
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings


■ [Rating: 3] As written, the proposed study may be too broad and there are too many different variables (and variable
  combinations) than could be reasonably explored to be confident the research objectives can be achieved.
Research Advisory Committee
■ Concept has promise, but objectives are unclear - basically a list of tasks.

■ Resulted from a resolution of the Sub Committee on Design to support CSS

■ Particularly important and aligned with Mn/DOT initiatives (CSS, Complete Streets, Performance-Base Flexibility in
  Design, Toward Zero Deaths, Multimodal Planning Integration & Sustainability)

■ This is some nationwide interest, but not a major problem for MDOT. It could be really expensive without solving any
  problems as drivers impose a multitude of distractions upon themselves.

■ Research appears to try to discredit known safety effects of roadside fixed objects. There is already research to show
  speed effects of roadside fixed objects so that can already be evaluated relative to the effect of crashing into these objects.

■ The problem statement is unclear as to problem and objectives.


Item #121:       Reducing Fuel Consumption and Emissions through
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR        2       5    8   2

G-22             Improved Traffic Signal Strategies                                           (46) RAC    1    4   3   9   19   6   3



Standing Committee on Research
■ An interesting problem, but I don't think the problem statement as currently written would really produce a definitive
  result that differs substantially from the work already done.

■ The research needs to focus on not only fuel consumption and cycle length, but also the impacts of protected phasing and
  the use of the new turn protected-permitted phasing developed in the MUTCD 2009

■ [Rating: 3] Proposal is conceptually very similar to an ongoing study of GHG benefits from operations strategies, which
  was launched by HEPN and HOTM earlier this year and will analyze these strategies using best-practice
  microsimulation techniques with advanced emissions modeling (such as CMEM or MOVES). The proposal would also
  be stronger if it discussed research considerations for optimizing signals across a network, as opposed to along individual
  facilities.

  This project is proposing to investigate shortcomings in current analysis tools and traffic control strategies with respect to
  estimating environment impacts of emissions and fuel consumption. Better tools are now available that strive to capture
  emissions and fuel consumption which can be integrated into existing traffic signal tools and simulation models to
  account for new mixes of vehicle fleets (e.g., hybrid, electric, diesel, gasoline, etc.) and other operational considerations
  (e.g., stops, queues, etc). This is an important project and it is well aligned with current research being pursued in the
  ITS AERIS program focused on new environmental transportation applications. This project is a fundamental first step
  in the development of new traffic control strategies that consider environmental impacts.


Research Advisory Committee
■ Certainly the impact of the use of fossil fuels on our environment and economy is a current problem that needs
  researching. Improving traffic signal strategies would be appropriate for NCHRP, as it is of nationwide interest and is
  traffic related. Considering the Traffic and Safety Evaluation panels comments, it does not appear that the probability of
  this research being successful is high, as they questioned how results would be incorporated into signal optimization
  programs. If successful, the payoff would be high with respect to the cost of the research.

■ Interesting


                                                             IV-94
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Hasn't this already been done.

■ In a recent review of a related issue, WSDOT found that system efficiency in general is an under-researched area. The
  benefit of this research will be a better understanding of how we can manage our system for multiple benefits -
  throughput, emissions (not just GHGs), and fuel use. I like that the research specifically looks at freight measures as
  some of the GHG reduction measures that affect POVs do not affect trucks. Any fuel savings is a direct economic
  benefit. The proposal wisely addresses the fact that future vehicles will us different fuels and technologies that may
  respond differently to common drive cycles


Item #122:       Relationship between Safety and the Number of Lanes
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR            2   5     8   1   1

G-15             on Urban Freeways                                                           (46) RAC    1    3   6   10   20   2   3



Standing Committee on Research
■ An interesting problem statement, but I think the underlying safety issues are being oversimplified by focusing on purely
  number of lanes. Number of lanes is probably a surrogate for many other factors impacting safety, like V/C, interchange
  density, etc. There are many confounding factors that are closely related to the number of lanes. I don't think the effect of
  the number of lanes can be isolated from those of the other factors properly with current level of information extractable
  from existing crash and roadway databases.

■ Combine with G-13. Recommend to fund Phase-I only after combination.

■ This would be good information but probably wouldn't effect what we would propose for a project.

■ Capacity improvements are generally dictated by mobility needs and safety for those projects is generally not the basis
  for purpose and need. Two-lane to four-lane conversion is partly based on safety however that research is already
  documented.

■ [Rating: 3] Consider combining G-13 and G-15 since both investigate the complex freeways cross sections found in
  urban settings. This potential joint effort can build upon the Highway Safety Manual freeway crash prediction
  methodology being developed under on-going NCHRP 17-45 project.
Research Advisory Committee
■ AK freeways generally 2-3 lanes max.

■ No Comment

■ Combine with G-13 as proposed for a Ph. I cost of $400,000 over 15 months

■ Focus may need to be directed more toward the poor interchange spacing , inadequate median widths, lack and mis-use
  of shoulders - consider consolidating with G13

■ This research statement is described in such a way that it appears there is a motive to the research to show added lanes
  results in reduced safety. Any evaluation should be done in a manner neutral to policy issues of congestion and impacts
  due to highway widening.

■ Scope may be too narrow. Doubt that lane count alone will shed much light on safety trends.


Item #123:       Development of Congestion Reduction Factors
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        2   3   2     4   4   2

G-32                                                                                         (46) RAC    2    6   5   8    14   7   3



Standing Committee on Research
■ Submitted by John Miller

                                                            IV-95
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ Not sure how applicable this is to Midwest states. If congestion could be defined in terms of travel time savings that
  would apply to more rural areas.

■ Congestion reduction factors have been the subject for numerous studies. It is not fully clear how this research will
  advance the state of the knowledge for the profession. Work needs to be done to expand the current ITE “toolbox” and
  PTI manuals.

■ Caltrans testing the Tools for Operations Planning (TOPL) tool and "what-if" congestion scenarios; TOPL is being
  developed at the University of California Berkeley Partners for Advanced transit and Highways. Reconsider this
  proposal next year.

■ [Rating: 3]
Research Advisory Committee
■ Not sure this is needed in lieu of SHRP-2 products.

■ Not clear how developing new planning factors independent of documents such as the Highway Capacity Manual would
  be useful for preliminary development of traffic generators.

■ There is more research on this topic than identified in the Problem Statement. This is a relatively high cost

■ While such a tool is desirable, it would not be feasible to develop universal congestion reduction factors or ranges that
  are valid or useful for application across various urban regions and the US- there are too many variables that influence
  the impacts of strategies. Similar strategies will provide different results based on location, direction, surrounding arterial
  conditions etc. the reduction factors would have to be very broad, hence very rough, and ,as such, this seems an
  expensive undertaking for a very limited potential output. A better approach could be a much smaller scope synthesis of
  actual Before and After results of congestion mitigation strategies across the full spectrum in a unique region that
  provides illustrative examples of what reductions were achieved for that region. But it would be very difficult to
  normalize these type of results across the US to come up with standard range of values for planning processes. WSDOT
  has planning level tools in place to perform project prioritizations based on congestion reduction strategies. Dowling
  Associates, Inc. in conjunction with Kittelson & Associates developed “WSDOT Mobility Project Prioritization Process”
  worksheet and user guide in May 2000 (http://www.wsdot.wa.gov/mapsdata/travel/mobility.htm). This particular tool in
  association with simulations modeling traffic analysis software and project cost estimate tools help develop scenarios that
  are used for project prioritization and planning. It is also noted that this project has no DOT or AASHTO Standing
  Committee co-sponsorship


Item #124:       Develop a Framework to Incorporate Climate Change
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR        1   4   5    2   2   3

B-09             into the Planning Process                                                    (46) RAC         4   7   8   16   5   5



Standing Committee on Research
■ A national policy on how to address GHG in planning is probably needed, but NCHRP does not appear to be the logical
  location for such a policy. Perhaps the same concept can be pursued through other TRB mechanisms, such as special
  reports. (1) Given existing work, 12-month lit review or synthesis of practice seems more cost-effective. $700K is
  WAY too much. (2) Would prefer a generic approach to incorporating uncertainty. Do the adaptations needed to
  incorporate uncertainty due to climate change differ fundamentally from those needed to incorporate uncertainty due to
  tech. change or pop. growth or "peak oil"? Any of these can affect LCC, travel demand, and land use.

■ This relates some to B-07... perhaps link?

■ I agree with the FHWA comments in that this may be premature or redundant.

■ We echo FHWA's evaluation.

■ The dollar amount seems high. Climate change and transportation continues to be a growing concern for all areas of the

                                                             IV-96
PART IV: Summary of Comments                                                                                        13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings

  United States especially since transportation contributes to 27 percent of the GHGs emissions. With EPA’s continual
  efforts to reduce the thresholds for pollutants and GHGs, states and MPOs will struggle with air conformity issues. The
  outcome of this proposal would be very useful to states and MPOs in their planning process.

■ premature; submit later

■ If funded, a reduced budget at no more than $500K is recommended.

■ I find merit in 'premature' opinion on this one.

■ This project can serve as a way to synthesize the existing work into a framework that transportation practitioners can use.

■ [Rating: 2] This proposed project is likely premature or redundant. The literature review is good, and what one may
  conclude from the overview of work underway is that, even though the issue is timely and important, the substantial
  points called for here are all being substantively addressed in other proposals.
Research Advisory Committee
■ Many State efforts have already made sound recommendations. The barriers are generally policy-related and not due to
  lack of a published framework.

■ Too little has been done to look at the downstream effects of new transportation plans impact on climate change. This
  proposal is timely, but could be tightened to have more tangible goals.

■ Not sure how this will fit into all the other research/activities happening

■ The research is needed but there still are numerous regulatory uncertainties. It could be too early to approve this research.

■ Agree in concept. There is so much going on in this area that it is important to assure this is complementary and not
  redundant.

■ The goals and objectives of this project are currently being addressed by other on-going projects. Once these projects are
  completed, knowledge gaps that still exist and that were not addressed by on-going research will inform what needs to be
  done in this area. So while the projects is important, it duplicates ongoing efforts. Budget is high and unjustified.

■ Concern with this research is now applicable to each state.

■ Would be nice to have information to perform tradeoffs with other planning factors and goals but it may be a little
  premature to develop a useful framework right now.
Other
■ [Rating: 3.5] SCOE supports this research proposal. This research would add on to the work being competed by SHRP2
  SCOE recommends that Tasks 6, 7, and 8 be the primary focus of the research to avoid duplication with the SHRP 2
  work. The proposed research would be beneficial to state DOTs by focusing on both greenhouse gas mitigation and
  climate change adaptation. Education and outreach should be a major part of the research so that state DOTs can
  effectively use the information in their planning processes. AASHTO worked with FHWA to develop this problem
  statement.

■ [Rating: 5]




                                                             IV-97
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings



Item #125:       Assessing Vulnerability and Risks of Climate Change on
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR            4   4     4   1   4

B-03             Highway Roadsides                                                           (46) RAC    1    5   7   10   17   3   2



Standing Committee on Research
■ It is agreed that climate change may in fact have significant effects on current roadside designs and construction due to
  changes in precipitation and temperature ranges. However, it is difficult to see how the research - as outlined - will be of
  benefit to a large number of DOTs.

■ low chance success; precip predictions too variable; worse locally; wait for 20-83(5)

■ This research problem statement involves developing criteria for determining roadsides which may be vulnerable to
  future damage from more frequent and more severe natural disasters. While the effects of natural disasters on
  transportation facilities can be substantial, it seems that efforts should be focused on designing roadways which can
  adequately withstand the effects of such natural disasters. In NH and around the country, efforts typically focus on fixing
  known problems and then dealing with problems as they arise. There simply aren't the funds to fix facilities which are in
  seemingly good shape on the off chance they "might" be damaged by a natural disaster. It is unlikely that the results of
  this research would result in any useable information for NHDOT or many other states.

■ Everyone wants to talk about the weather, but no one wants to talk and do planning and preparation for the changing of
  climates we are going into. This would be good knowledge and information for long range planning.

■ Revise the problem statement to match the clarity of the objective.

■ [Rating: 4] This is a needed and timely proposal. Federal Agencies have been charged with addressing climate change
  impacts and ideas are needed for adapting to climate change impacts and incorporating climate resiliency into highway
  construction. This proposal focuses on inland areas, whereas much of our study to date has been related to sea-level rise
  in coastal environments. The somewhat limited geographic scope has the benefit of making the study more manageable.
  We agree that a geotech component should be involved. It would be nice to distinguish saturated condition slides vs.
  slope toe failures due to stream scour/erosion at the base of the slopes. The combination of aging drainage and slope
  stability infrastructure, borderline slope stability and regions of predicted increased precipitation should be examined.
Research Advisory Committee
■ Scope too broad to be an effective study. Not likely to meaningfully address Alaskan issues.

■ Questionable value in segmenting the potential impact of changing climate conditions on various part of a highway –
  roadsides versus the roadway as whole. If the roadside is vulnerable, the roadway will be vulnerable as well. Likewise,
  it is not clear what the value of identifying mitigation strategies for the roadsides – transportation agencies will be
  looking at options to protect the roadway facility, not individual segments of it.

■ So much happening and not sure how this is really different

■ Strongly support the study as long as it studies adaptation needs in all regions of the U.S. Some of the incorrect
  assumptions in the problem statement, i.e., few roadside fires in the Midwest or South, are concerning.

■ Important long-term questions on adaptability; not sure it is applicable for MN

■ Should include geotechnical considerations; Do not feel the results of this research would change our present design
  parameters.

■ This is a much needed research that will address a significant gap in the research literature and will inform the state of
  practice. DOTs need to have a empirical data on risks associated with climate change so that they can develop informed
  plans.


                                                            IV-98
PART IV: Summary of Comments                                                                                                  13-Apr-11
Reviewer         Comments                                                                                   Distribution of Ratings

■ Development of a modeling tool would be a good first step. However, need to make sure study covers more than just the
  western part of the states or not of value to other states.

■ The problem statement makes an unsubstantiated leap, and we want to be sure we are very clear about weather events
  within the historic range of variability, and not try to latch everything onto climate change. They seem to be mixing
  climate and weather. Need footnoting of citations to back up their statements. It also seems like they are not aware of
  the FHWA vulnerability assessment pilot projects or they think that work doesn't apply to roadsides (V (1)) In my mind
  we can't separate roadsides and roadways.

  Ideally I'd like to see this refocused to determine if there are long-term trends in impacts that are outside the range of
  historic variability. They could employ the FHWA "model" and the workshop process we are developing to meet
  Research Objectives 1 and 2; then objective 3 would follow from that. Objective 3 could include creating guidelines or
  thresholds for when transportation facilities should be relocated or abandoned.

■ The examples quoted in this proposal seem focused on a specific climatic and/or geographical region. This seems more
  appropriate for a pooled fund. A fully national study on climate change impact on roadsides would be difficult to
  manage.
Other
■ [Rating: 3.5] The Committee showed support for this research proposal, but acknowledged that it would be hard to do on
  a national scale since highway roadsides vary regionally. Most of the existing research efforts on climate change
  adaptation are focused on transportation infrastructure. The Committee was not aware of any existing research on the
  vulnerability and risks of climate change on highway roadsides. This research could fill this gap.


Item #126:        Intersection Control Decisions Based on Life-Cycle Costs
                                                                                                            NR   0   1   2     3   4   5
                                                                                                (17) SCOR        1       9     4   3

G-33                                                                                            (46) RAC    3    5   2   14    9   7   5



Standing Committee on Research
■ I agree that life cycle cost analysis is a good idea, but costs and benefits are likely to be very site specific. I don't know if
  findings can be generalized.

■ This is similar to another project that is no longer listed (G-23). The Traffic and Safety Evaluation Panel considered G-
  23 to be the stronger proposal. The research should build upon SHRP 2 Report S2-C02-RR: Performance Measurement
  Framework for Highway Capacity Decision Making.

■ Life Cycle costs frequently can not reflect the risk a governmental agency must face when doing business. Legislative
  mandates, risk management, elected official directives, design guidelines and engineering judgment frequently are the
  key issue(s). The research can not adequately reflect or overcome these real world issues mathematically.

■ [Rating: 5] Intersection crashes constitute over 50% of all crashes and about 20% of fatal crashes. Additional tools and
  guidance would assist States and locals in making better long-term safety investment decisions.
Research Advisory Committee
■ Life cycle costs should not be the major factor to use in determining the control required at intersects. Safety and
  operations are much more critical.




                                                              IV-99
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings



Item #127:       Design Criteria and Usage Guidelines of Full Graphic
                                                                                                       NR   0   1   2     3   4   5
                                                                                           (17) SCOR        1   2   3    10       1

G-05             Changeable Message Signs (CMS)                                            (46) RAC    2    4   4   11   15   7   2



Standing Committee on Research
■ On one hand, there has been minimal research in this area and thus a need exists to further explore graphics on CMSs.
  On the other hand, there is a reason that there has been limited research in this area - it isn't a priority for DOTs. In a
  recent VDOT survey, it was found that many DOTs aren't currently interested in developing guidelines for using graphics
  on CMSs. The majority of the respondents cited the high costs associated with upgrading existing CMSs to full
  matrix/full color.

■ Currently there are no standards or messaging types for Full Graphic CMSs in the country. Caltrans has several colored
  CMSs installed in a District and many more proposed. Message and graphic criteria for these types of CMSs needs to be
  established.

■ [Rating: 2] Research is needed. However, FHWA has funded a similar study. Suggest waiting for results from FHWA
  study to identify research gaps for an additional study of this type.
Research Advisory Committee
■ Some concern that the extra cost and complexity of the display will provide any added value to the motorist. I would be
  very interested in the results of this study, should it move forward.

■ I feel that this information is available from others in the marketing field.

■ Limited application

■ Given these signs are available we should conduct research to determine how they can be used safely and effectively. I
  am sure we will be contacted and lobbied more frequently by vendors to install these types of signs so we need empirical
  evidence, rather than our bias, to make decisions on whether or not we should install them.


Item #128:       Active Traffic Management For Signalized Networks
                                                                                                       NR   0   1   2     3   4   5
                                                                                           (17) SCOR        2   1   4    7    3

G-31                                                                                       (46) RAC    3    5   2   9    18   6   2



Standing Committee on Research
■ This is an interesting idea, but I think it needs more development. There are a number of techniques that the authors
  have lumped into ATM that I have not seen classified as ATM before. I suggest that they expand and refine this for next
  year.

■ Active traffic management research is detailed in the current FHWA “Traffic Signal Timing Manual” which is current
  under contract to be updated. It is important that this research is coordinated with and expanding the FHWA. The work
  needs to be accomplished, but is seems there may be an overlap in the research. The works need to compliment and
  expand upon each other’s work.

■ [Rating: 5] The work identified in this NCHRP proposal aligns with the FWHA HOP program plan. We have identified
  the need for field operational tests, implementation requirements, and benefit/cost analysis. Essentially, I fully support
  this proposal and do not see any major problem. The POP aligns with our current program. The only issue that I see is
  the proposed cost seems a bit low, so the scope of work will need to be refined and scope of work will need to be reduced.
Research Advisory Committee
■ High cost, more detailed objectives and support from audiences that would be affected, would help to rank any higher.




                                                            IV-100
PART IV: Summary of Comments                                                                                                 13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings



Item #129:       Development of Guidance and Best Practices for
                                                                                                           NR   0   1    2    3   4   5
                                                                                               (17) SCOR   1    1   5    1    4   5

G-03             Separated Bikeways based on Research and Analysis of                          (46) RAC    3    1   11   6   13   8   3

                 Crashes
Standing Committee on Research
■ The study should include selection between non-separate use (e.g., shared-use lane) and separated use. Funding at less
  than $400k seems proper. Agree

■ Relates to Problem G-41. It would be important to first understand the use of a separated bikeway before developing the
  guidance. Also, how does this relate to a “complete streets” policy? The guidance must account for differences in urban
  and rural areas of the country.

■ Problem statement contains erroneous information. Proposal has high cost, but in spite of this would only be able to
  either superficially address all the items requested for study, or adequately study only a few issues (no priority given).
  Concern that advocacy pressures would unduly influence study plan or results. Proposal assumes research will support
  positive results/guidelines.

■ [Rating: 3] Many agencies across the country are interested in separated bikeways. The proposed research study,
  however, is too ambitious in terms of crash analysis and comparisons given limited data. The proposal would benefit
  from a narrower focus.
Research Advisory Committee
■ Greater need is for analysis on crashes.

■ No Comment

■ As the literature search section notes, one-way separated bikeways have already been built in some US cities; many 2-
  way separated pathways (typically shared with pedestrians) have also been built. There is also much interest on partially
  separated bike lanes (e.g., separated by a gently rolled curb, or placed between curb and parking lane). However, only
  scattered, somewhat inconclusive and even conflicting data on safety experience are available, and there is still little
  consensus on criteria (under what conditions are such bikeways appropriate, when are they not?), best design practice,
  and maintenance experience. Separated bike lanes in New York City have gotten mixed reviews. Once such facilities are
  built, motorists expect cyclists to use them, even when cyclists find the facilities don’t work so well. It’s really time for a
   systematic evaluation.

■ High Needed for AASHTO Bicycle Guide

■ I like the concept but the premise is based on crash data which is not an accurate metric due to poor reporting/data. So I
  would not support this proposal unless they were willing to consider other metrics to determine safety.

■ combine with G41

■ Why isn't this issue covered in 2010 AASHTO Bicycle Guide? Separated paths are covered there, and the 2010 HCM
  provides combined mode level of service measures that would include cyclist perception of separated facilities.

■ As a bicyclist road user, I am providing a first hand opinion that this research is desperately needed. There appears to be
  a lack of knowledge within our agency concerning good sound Engineering guidance concerning bicycle facilities.
  There is a need to develop and publish guidance that would help agencies implement good engineering policy concerning
  cycling considerations in design or construction.

■ If conducted, combine with G-41




                                                            IV-101
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings



Item #130:       Evaluating Multimodal Trade-Offs and Informants for
                                                                                                       NR   0   1   2     3   4   5
                                                                                           (17) SCOR        1   3   6     2   3   2

C-09             Applying Flexibility in Design                                            (46) RAC    3    5   5   12   10   5   5



Standing Committee on Research
■ The problem is quite ambitious. The scope should be narrowed to focus on just a few design elements and their safety
  impacts; such a tool could inform B-10. Agree with NCHRP comments; need to narrow the scope.

■ Problem statement is broad and vague.

■ research strategy not well defined or constrained

■ The ability to implement context sensitive solutions, and/or 'complete streets' is of current interest to ADOT. The
  proposed study will support an upcoming ADOT MPD effort to prepare a 'smart transportation plan'. I also believe the
  proposed study could be a valuable resource for Planners working on rural transportation studies.

■ Proposal should be re-written to address multimodal tradeoffs. The suggested rewrite follows: Transportation
  professionals must balance many factors and objectives related to roadway and context to successfully address multi-
  modal concerns related to access, mobility, connectivity, safety, operations, human & natural environments, cultural
  resources, space constraints, financial constraints and quality of life considerations. Impartially addressing these
  important roadway design considerations is needed to successfully address and balance sometimes competing concerns
  and objectives and unique roadway and community circumstances. Transportation professionals must frequently evaluate
  design alternatives and elements that may not conform with standards or guidelines. Understanding the trade-offs of
  alternative design strategies is critical to preserving and enhancing multi-modal safety and operational performance and
  in optimizing benefit to cost ratios or return on investments within unavoidable constraints. For various highway types
  and settings, analyze the relationships and trade-offs between key design elements, such as shoulder widths, lanes
  widths, and number of lanes with inclusion of transit and nonmotorized facilities such as bike lanes and/or sidewalks, and
  planted medians and sidewalk strips. The research shall identify those key elements which typically must be evaluated
  on various types of projects and project settings, and performance measures relating to balancing safety, and operations
  and community acceptance. The research must study various applications where trade-offs did or did not occur and the
  resulting impacts, if any, on those performance measures. Research Objective: Identify design elements where
  flexibility is to be considered. Identify critical performance measures which could be impacted by implementing flexible
  application of design elements. Identify expected impacts of various trade-offs of various design elements. Develop
  guidance on evaluating the application of flexible design elements. Develop a methodology for a feedback loop for 1)
  determining benefits, problems and lessons learned from applying flexibility in design (inclusive of design exceptions
  and variances) and for 2) generating better and more flexible design guidance and review process at the state level. TP:
  Research will assist CA in implementing complete streets policy and smart mobility framework (i.e. Context Sensitive
  Solutions nationwide)Design: Research statement must address multimodal tradeoffs (CA to take lead on the revisions to
  be furnished by Tim Craggs)

■ [Rating: 3] The proposed research project will develop guidance to assist State DOTs with assessing the implications
  (e.g. benefits, problems) and lesson learned associated with the design of roadways or elements of roadways to assess the
  implications with different design decisions. Currently this guidance does not exist.
Research Advisory Committee
■ Scope too broad.

■ Particularly important and aligned with Mn/DOT initiatives (CSS, Complete Streets, Performance-Base Flexibility in
  Design, Toward Zero Deaths, Multimodal Planning Integration & Sustainability)

■ Consistent with Complete Streets Initiative

■ There is nothing described here that doesn't already exist in several publications including FHWA's "Flexibility in
  Highway Design". Don't see any lack of information on context sensitive design that this would feel.

                                                          IV-102
PART IV: Summary of Comments                                                                                                  13-Apr-11
Reviewer         Comments                                                                                   Distribution of Ratings

■ Description of objectives is weak


Item #131:       Development of Value Engineering Non-Capital
                                                                                                            NR   0   1   2     3   4    5
                                                                                                (17) SCOR            3   6    4    3    1

D-15             Performance Indicators                                                         (46) RAC    2    3   8   12   13   5    2



Standing Committee on Research
■ I've never seen this concept proposed seriously before now at the funds-constrained state DOT level. It reminds me of
  HWLongfellow (The Builders): "In the elder days of Art, Builders wrought with greatest care Each minute and unseen
  part; For the gods see everywhere." Objective is relatively simple: identify those non-capital improvement elements that
  will add "value" (e.g. public appeal?) to transportation projects --- could be well worthwhile.

■ HMA tapers with improved safety, rideability, and density.

■ The research objectives are notable but, in light of other issues, this is not a high priority.

■ Results from this research may help the on-going NCHRP 20-63B Performance Measurements project. The approach
  and methodology need to be described in this proposal.

■ [Rating: 5] Project will fill an important void in current Value Engineering guidance. Important to support sound and
  well-founded value engineering outcomes.
Research Advisory Committee
■ Excellent and timely topic to quantify project benefits that may not easily be able to have dollar values attached to them.

■ Since 2008 FHWA has begun to collect data relating to Non-Capital Performance Measures, but has not really been able
  to establish any useful measure. The outcome of this research could assist in establishing a consistent set of measures to
  quantify the non-capital benefits of performing VE studies.

■ How important is this for the money spent? On majority of projects we can determine the cost savings.

■ Potential value to DB
Other
■ [Rating: 2] While VE’s are traditionally capital driven. There are instances that time and convenience to the public play
  and important role and that is hard to quantify.


Item #132:        Design Hydrology For Stream Restoration And Channel
                                                                                                            NR   0   1   2     3   4    5
                                                                                                (17) SCOR        3       6     6   2

E-02              Stability At Stream Crossings                                                 (46) RAC         4   1   14   14   10   2



Standing Committee on Research
■ The problem described here is significant. Making changes to the current methods for accounting for these types of
  flows and resulting channel stability will take significantly more research than is proposed here. Prior to committing
  funds to address this problem, it is recommended that a more detailed comprehensive plan (involving multiple phases) be
  developed and proposed.

■ While we do have issues with stream morphology, not sure this research will help.

■ This research will not change how we size or design our bridges or design streambank protection measures.

■ With Item E-07 present, this item is unnecessary. Hydrology is the same no matter what is being designed, otherwise we
  are talking about hydraulics, which should then be tackled as such.


                                                             IV-103
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ [Rating: 5] We think this is a study that has both great need and great utility. Nationally, resource agencies are placing
  "hydrologic" requirements of this nature upon State DOTS without any consistent scientific or engineering basis. For
  example, the Corps has tried to institute such approaches in their permits for linear transportation projects. The result
  caused confusion and additional efforts by the affected transportation agencies.

Research Advisory Committee
■ Multidisciplinary approach is required that is not well addressed in an Engineering manual.

■ Our larger drainage areas (over 1000 acres) are already designed using HEC-RAS input requirements such as bank-full
  dimensions. Federal no-rise certifications are necessary using different IDF curves for floodways. I’m not sure how much
  $350,000 will go toward reaching the Research Objective without pilot studies. Smaller drainage areas use structures
  designed by HW/D ratios to keep the headwaters out of the roadbed and overtopping. DOT’s will need to prepare to
  change how they handle hydraulic design if land-use is considered. Land-use change for any watershed is an evolving
  process but our design and construction effort is a one life-cycle event and not easily changed.

■ As this relates to scour potential, it could be useful, but the proposal does not appear to be focused enough on any
  particular issue.

■ Hydraulic Engineers have many tools to estimate hydrology for peak storm events but there is no generally accepted
  practice for estimating discharge ranges for design in stream restoration or "natural channel design".

■ Similar to proposal E23 but with a budget. Proposal addresses key shortcomings in current hydrologic methodology for
  low flow discharge calculation


Item #133:       Intersection System Analysis Methodology
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR   1    1   2   5   5    3

G-26                                                                                         (46) RAC    2    5   5   7   18   7   1



Standing Committee on Research
■ I have serious concerns in trying to simplify the analysis of unconventional intersection designs from simulation to an
  HCM-like procedure. I think loss of fidelity in the analysis would be very large.

■ A tool would be helpful for planning applications since many agencies are considering these types of corridors. It is
  likely that corridor simulation would still be required.

■ The current HCM allows for the engineer to make the necessary decisions on how to weigh the capacity for the main line
  system based upon the dominant intersection(s).

■ [Rating: 5] A tool would be helpful for planning applications since many agencies are considering these types of
  corridors. It is not clear that a closed form or simple procedure could be developed. A detailed operational analysis and
  simulation would be needed to evaluate these conditions.
Research Advisory Committee
■ No Comment


Item #134:       Development of Asphalt Binder Tests and Specifications
                                                                                                         NR   0   1   2    3   4   5
                                                                                             (17) SCOR        1   3   3   6    3   1

D-06             for Use in Porous Asphalt Mixtures                                          (46) RAC         7   6   9   14   7   2



Standing Committee on Research
■ This statement was ranked a medium priority by the SOM panel in part because only approx. 20% of states use porous
  friction courses. While the research would be quite useful, particularly to states already using such mixtures, it may not
  address enough of the issues inherent in PFCs to greatly increase their use. Overall, a very good statement, with
  demonstrated need, but not as compelling for support as other statements.

                                                           IV-104
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ We have limited application and experience with open graded friction courses.

■ Too expensive

■ Better handled by individual states that use porous asphalt.

■ Definite need but currently porous pavement is a small percentage of the total HMA placed.

■ Budget is excessive

■ [Rating: 2] Not a national need due to limited use of porous friction courses.
Research Advisory Committee
■ Of no value to Alaska.

■ Increase development and testing of modified liquid binders can always be a benefit. When using a modifier to change
  the binder type in Porous Asphalt Mixtures (PFC) the results are basically a Gap Graded Stone Matrix Asphalt (GGSMA).

■ Good idea, but doubtful that a useful product will emerge. States already have several binders that are used in HMA.
  Additional binder specs/types will complicate implementation.

■ Implementation aspects.

■ This problem statement is very broad. Recommend a phased approach so that results can be known in a more timely
  manner. Otherwise, break into separate projects

■ MDOT is very happy with the performance of our PG 76-22 binder specification for OGFC. The results of this research
  would be of little to no use to MDOT.

■ Agree with Panel comments.

■ Most of these mixes are being used on high volume roads where stiffer binders are going to be required. A much greater
  need exists to evaluate gradation requirements for these mixes.

■ Ohio does not use.

■ Cellulose fibers should be included in the test matrix. Various Tack Coats should be considered. Consider PFC at 1.25"
  thick and OGFSC at 3/4" thick.

■ Low - generally poor performance in northern tier states


Item #135:       Participation of State DOTs in One-Call Systems
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        1   4   4    6   2

D-26                                                                                        (46) RAC    1    5   5   7   16   7   4



Standing Committee on Research
■ Lack of coordination with utility owners has significant negative impact on project scheduling - very worthwhile project

■ We know this is a problem...and frankly, know how to fix it. Not clear on value this research would bring.

■ Most state DOTs are not members of one-call systems. Participation in one-call systems will assist state DOT efforts to
  collect timely utility information and engage the utility industry more productively and effectively. The payoff potential
  could be significant and result in fewer project delivery delays.

■ synthesis?

                                                           IV-105
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ Seems like a good idea but the logistics are complicated and will take a long time to populate with data and bring the
  utility industry in line to supply the data necessary.

■ Too difficult to implement.

■ [Rating: 4] State DOT non-participation in One-Call systems has resulted in conflicts with many other potential ROW
  users, and this policy should be examined for potential change. Though there are apparently a number of legal and
  procedural issues to be resolved, this goal should be pursued, and this proposal would be a good beginning toward that
  end by providing comparative information for policy makers at multiple levels.

Research Advisory Committee
■ The purpose of One Call is to prevent damage to underground facilities. To promote safety and provide an efficient, cost-
  effective communications network among designers, excavators and facility owners.

■ This should be combined with D-21

■ More information in this field would be a positive, but the level of benefit is in doubt.

■ Getting One-Call Systems to be more responsive to DOT needs would be a better topic.

■ There is currently a proposal to revise the Washington State dig law which may result in additional obligations for
  WSDOT regarding response to one call requests. It would be very helpful to better understand the perspectives and
  challenges that other DOTs face in this area


Item #136:       Effects of Heavy Truck Volumes
                                                                                                          NR   0   1   2    3   4   5
                                                                                              (17) SCOR        3   2   3   5    2   2

B-24                                                                                          (46) RAC    2    8   7   5   14   5   4



Standing Committee on Research
■ The problem statement defines a high priority problems (noise and psychological effects of trucks), but the specific
  objectives of the research effort are not clearly stated. Also, looking at the impacts of trucks on the properties of quiet
  pavement does not seem to mesh well with the rest of the problem statement. The recommendation of the NCHRP
  reviewer to combine this with B-13 appears to be a good one.

■ This focuses too narrowly on noise concerns from the heavy trucks and how it impacts sleep...since states have noise
  policies and have no intention of treating noise from trucks any differently than noise from cars, there doesn't appear to
  be much value in this?

■ Not clearly defined.

■ Consider combining B13 & B24.

■ misdirected by concentrating on trucks; need to look at other factors

■ Could be combined with B13.

■ This problem statement involves investigating the effects of heavy truck volumes on the surrounding environment. The
  problem statement is very broad and attempts to understand the effects of heavy truck volumes on adjacent residents, the
  effectiveness of abatement measures adjacent to facilities with heavy truck volumes, and the impact of such volumes on
  the abatement infrastructure itself. The problem statement may benefit from being broken into three separate pieces; one
  to obtain an understanding of the basic principals behind heavy truck noise and its effects on human activity; a second to
  determine the effectiveness of the heavy truck noise prediction capabilities of the FHWA Traffic Noise Model (TNM);
  and a third to understand the impacts of heavy truck volumes on OGFC pavements.
  We believe that the most important part of this problem statement is updating (or providing information to update) the
  TNM, which is the primary tool used to identify traffic noise impacts and effective noise abatement. Overall this

                                                            IV-106
PART IV: Summary of Comments                                                                                             13-Apr-11
Reviewer         Comments                                                                               Distribution of Ratings

  problem statement would provide some useful information but would benefit from more focus.

■ This should already be well studied

■ The research in B-24 is unfocused, covers too many topics, and it should not be combined with B-13 as the NCHRP
  reviewer for B-13 suggested.

■ [Rating: 3] The value and benefits of the research are not clearly identified.
Research Advisory Committee
■ Objective unclear. Incorporate into B-13.

■ Title appears to have been truncated. This paper is about measuring and remediating noise produced by heavy vehicles.
  This is much needed research to help alleviate noise produced by trucks. One objective is to measure and conduct
  analysis regarding the shielding far-lane traffic noise by high volumes of trucks in closer lane. This type of
  overprediction would be variable except in cases of very high volumes sites where heavy truck flow existed
  continuously. Abatement of noise through application of noise absorbant materials would be significant enough for an
  entire study.

■ Broader analysis of B-13 may be good.

■ Not a lot of need at this time for Ohio.

■ While we support the conceptual need for this information, we do not support the statement, as written. This statement
  needs more focus before it is ripe for NCHRP research.

■ The title of this research should point specifically to the noise effects.
Other
■ [Rating: 0] The Committee does not believe the objectives of this research are clearly identified.


Item #137:       Survival Rate for Disadvantaged Business Enterprise
                                                                                                        NR   0   1   2    3   4   5
                                                                                            (17) SCOR        3   4   3    3       4

SP-01            (DBE) Program Graduates                                                    (46) RAC    3    8   6   9    9   3   7



Standing Committee on Research
■ The proposal seems tilted a priori toward expanding the program, regardless of its past success record. The actual
  findings may be irrelevant for this reason, but elements in successful states may be worth documenting and propagating.

■ Proposed budget seems high. While I believe this is a worthwhile effort, I also wonder whether this is an appropriate use
  of the NCHRP funds.

■ The research is in alignment with 49 CFR 26.1.f, but is not an "acute problem." Ability to compile graduate data is
  questionable. Some of the data collected during this research may be important.

■ As written the score is a 0. Suggest that the problem statement be rewritten. The more appropriate Research Problem
  Statement is for a DBE Supportive Services study, that would identify what types of business development assistance
  has been successful in helping DBEs stay in business. The current discussion on the Research Problem Statement is
  adequate and supports the new problem statement. The new problem statement---DBE Supportive Services-- would
  therefore ask the question: What DBE Supportive Services are being offered, by State DOTs, to assist DBEs in
  competing on DOT federally assisted contracts Has the DBE Supportive Services sustained DBEs in their business Has
  the DBE Supportive Services assisted DBEs expand their business --by business size, size of contract reach, by
  diversifying its business service What assistance has proven successful in sustaining DBEs in business on DOT federally
  assisted contracts What do DBEs want in DBE Supportive Services assistance How have DBEs used the assistance in
  sustaining their business What is the rate of return on the assistance provided to DBEs by State DOTs What State DOTs

                                                             IV-107
PART IV: Summary of Comments                                                                                          13-Apr-11
Reviewer         Comments                                                                               Distribution of Ratings

  utilize the FHWA DBE Supportive Services funding What State DOTs supplement the FHWA DBE Supportive Service
  funding with non-federal funding Does the DBE Supportive Services provide sufficient assistance and experience to
  DBEs to survive without being a certified DBEIs the annual $10 million in DBE Supportive Services funding that
  FHWA administers adequate for the 50 State DOTs who request annual grants to support their individual DBE
  Supportive Services Program's

■ [Rating: 4] GAO and other government offices have heightened their scrutiny of the DBE program and want to know if it
  is "working," how "effective" it is with respect to the original intent of the program, and to what extent DBE firms are
  "graduating" from the program.
Research Advisory Committee
■ Not appropriate for NCHRP.

■ I concur with the NCHRP reviewer's following statement: "In order to determine whether the DBE program is achieving
  its goals, there is clearly a good deal of merit in the proposed research. However, I don't believe that evaluating the
  effectiveness of federal DBE legislation is an appropriate use of NCHRP funding."

■ The primary purpose of the DBE program is to grow and graduate firms so they can compete with the larger, more
  established firms. This is not something FHWA is monitoring and using to determine the success of DBE programs. It
  should be the primary measure of success.

■ This statement, asks the question, is a graduate of the DBE program able to survive on its own, without the program
  benefits? Although graduates exceed program size standards (which are now being increased under new federal
  regulations), they are typically far from the size of the large prime contractors against which they will compete for State
  DOT road and bridge contracts. There is often less of a level of guarantee of continued work, as prime contractor firms
  are likely to continue relying on DBE-eligible firms to meet the goals that are set on projects, thus limiting the field of
  potential business opportunities for the graduated firm in that market. Moreover, due to the nature of relationships in
  construction contracting, the ability for a firm to market itself once graduated from the program can be problematic, both
  because of the inability to represent a means for a prime to garner DBE credit, but also due to lack of graduated firm
  expansion into of other ripe areas for business, limited business networks and gaps in firm marketing or resume strength.
  Does the DBE program provide its graduates with sufficient opportunities and experience as subcontractors to survive on
  their own? 1) NO, Massachusetts DBE’s have had challenges and many were not obtaining work from the prime
  because primes were willing to only use DBE’s for credit. Examples may be obtained from engineering firm that
  graduated from the program. Some found their way back into the program. 2) Very few find themselves able to bid as
  prime. Only those that were well established without the DBE program seemed to continue bidding as primes. 3) It may
  be worthwhile for this analysis to focus on firms by type of NAICS code or more refined definition of activities to
  determine whether there are fields where firms may be more likely to be “carried” after graduation. In Massachusetts, we
  have had one experience with an electrical firm that appears to be able to thrive that is near graduation, but that has yet to
  be studied over a period of time. Do DBE Supportive Services aid in their ability to manage the financial, human
  resource, and marketing elements of their firms? 1.) Our theory is that Supportive Services is helpful to firms because
  many lack the time, connections or access to the expertise needed to address the critical areas that impact business
  structure and management. We have also incorporated legal support into our model of the DBE-SS program. We
  therefore believe that this program can be an aid to DBE firms, although we currently have only preliminary qualitative
  and quantitative information in support of our theory. 3) Massachusetts is currently completing its first fully year of
  experience with the DBE-SS program, and we have had no ability yet to monitor the success of firms after the program.
  That said, it is clear that we are working on developing a program that has both reach and depth of resources,
  instructional value and connectivity to make firms aware of the technical and business development aspects of building a
  business. 4.) Our project is working with a $201,000 grant to service 15 firms, which is a significant resource, although it
  is approximately $30,000 less than what we had planned for in our program strategy. It is presently unclear if that
  resource gap is compromising results, as again, we are only in our first cycle of the program.

■ Top Priority

■ This is a very important research topic to determine the reasons for success or failure of DBE firms participating in the
  DBE Program. Especially important are the strategies to reduce the failure rates of firms in the future.

                                                           IV-108
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Despite the comments in the review section, I think this is an appropriate use of NCHRP funds as it relates to the ability
  of the industry to develop and maintain a variety of contractors to deliver products and services.


Item #138:       Improving the Transportation Decision-Making Process
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        2   3   5     3   1   3

B-08             through Integrating Health Impact Assessment Effective                      (46) RAC         8   7   10   14   2   4

                 Practices
Standing Committee on Research
■ Revise the problem statement to better show how to incorporate health impacts into NEPA or other frameworks. As
  written the problem suggests creating yet another administrative process.

■ It appears to complicate an already complex process

■ This is an emerging issue and State DOTs will need hard data. The public is asking for information, especially around
  ports. A recommendation is to research the first few objective since funding seems insufficient for all 8 tasks.

■ [Rating: 5] Our high support is contingent on adjusting the SOW per our previously submitted evaluation. FHWA and
  the transportation community need to frame and take a lead in this issue before other interests fill the void. Title should
  be changed to set appropriate expectations – “Incorporating health concerns into transportation planning and project
  development”
Research Advisory Committee
■ Agree with SCOE ranking. Needs greater focus on planning.

■ Reviewer criticized scope. If score selects project, panel should take a hard look at scope.

■ Great one!!!! I want to be on this one

■ Fitting considering added emphasis on transportation-land use connections.

■ If Human Health Impact Assessment is going to be a future standard this research has merit.

■ Currently, not enough need outside CA for this type of research.

■ The SCOE steering committee revisited this proposal and scored low. It would be beneficial to identify effective health
  impact assessment guidance. If developed, we encourage this to be done in the context of NEPA procedures rather than a
  separate assessments.
Other
■ [Rating: 0]

■ [Rating: 4]


Item #139:       Asset Management Approaches to Ancillary Highway
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        2   3   3     6   3

B-18             Structures                                                                  (46) RAC    2    6   8   9    12   5   3



Standing Committee on Research
■ Overhead sign structures as well as sound walls and other roadside assets require an asset management systems approach
  to better maintain these facilities.

■ This may be better as a synthesis

■ Budget for a synthesis seems high. It appears to be a duplicate of an FHWA study.
                                                           IV-109
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings


■ FHWA has apparently done much of this work already

■ Arizona fortunately has not yet has a problem (overdesign + good environment). Not a critical need right now, but could
  be useful for other states, and for long-term management of ADOT sign structures.

■ Revise the title to "Asset Management Approaches to Overhead Sign Structures". Caltrans is already implementing asset
  management in this area.

■ [Rating: 2] No reference is made to the study conducted by the FHWA NDE validation center in early 2000. The FHWA
  study highlighted the state-of-the-practice for the ancillary structures by reaching out to 37 State DOTs. Specific topics
  included: inventory information, inspection procedure information, problems observed, and opinions on improvements
  to inspection methods.

Research Advisory Committee
■ Information already available.

■ A timely topic but also one with several solutions in the commercial arena.

■ NCHRP 10-80 is already investigating this problem. This should not be funded or there needs to be some
  communication within NCHRP.

■ Based on work with "Preserve Critical Infrastructure" working group, know this is needed research.

■ A commitment to timely inspections would eliminate the need for this research.

■ This study will provide clarity on maintenance procedures, which is really needed in North Carolina.

■ ODOT implemented an overhead sign support inspection program in the late 1980s. This would not be too useful for us.
Other
■ [Rating: 2] Might be better off as a synthesis…


Item #140:       Hydrology for Stream Restoration and Fish Passage at
                                                                                                        NR   0   1   2     3   4   5
                                                                                            (17) SCOR        2   3   5     6   1

B-23             or near Stream Crossings                                                   (46) RAC    2    5   3   13   16   2   4



Standing Committee on Research
■ I recommend a review of the regional bankful channel geometry curves developed by USGS (Report 2009–5206) - there
  may be some redundancy there. Correlating fish passage to these stream restoration designs is important, but this
  proposal should include case studies to test the success of the methodology for developing fish passage design.

■ Budget is too high

■ Design hydrology would benefit engineers. However, current rules address attenuating peak flows so this project is not
  considered critical.

■ Not as big of an issue here in AZ. Could be useful information when designing systems to convey water.

■ There is substantial and detailed literature on both fish passage and stream restoration/hydrology. Much of it is
  synthesized by the forest Service and by several states.

■ [Rating: 3] Further testing of HEC-26 along with stream restoration is needed.
Research Advisory Committee
■ Problem statement is poorly developed. Already much useful material on Fluvial Geomorphology.
                                                          IV-110
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings


■ High National Priority

■ Fish passage could be component of possible stream mitigation.

■ I feel that a uniform procedure for stream restoration design including fish passage is important but must be secondary to
  safety and sound geometric design. Over complicating hydraulic design when considering land-use changes may be
  counter-productive.

■ This is very similar to E-02; maybe they could be combined.

■ This research will not result in much that Ohio can use.

■ Difficult to judge the scale of this project and probability of success without a budget.

■ This may be more appropriate as a pooled fund study. Refer to ongoing TPF-5(164), Fish Passage in Large Culverts with
  Low Flows.
Other
■ [Rating: 4] The statement proposes to develop/compute flow duration curves that could be used at a restoration site.
  These could help state DOTs with fish passage designs since the flow duration curve would allow a more comprehensive
  look at the range of flows relevant for fish passage. As urbanization occurs upstream the designs would be altered to
  control for either increased or decreased flow volume. The results of this study would be a design hydrology for stream
  restoration and fish passage design.


Item #141:       Guidance: Temporary Traffic Control Devices used for
                                                                                                          NR   0   1   2     3   4   5
                                                                                              (17) SCOR        2   3   5     4   2   1

G-19             Planned Special Events                                                       (46) RAC    2    5   7   13   11   5   2



Standing Committee on Research
■ Special planned events are largely site specific and unique for each location. A synthesis may be useful to describe how
  select events are planned. PSEs are site specific and there are too many factors that blanketed guidelines can't address.

■ Current guidance is sufficient.

■ The variety of planned special events, including the agencies and interests involved, makes research in this area difficult,
  with a low chance for success.

■ The issue of multiple agencies providing Temp Traffic Control for large events is important for consistency & continuity,
  but may already be addressed thru SignCAD's ConeZone software.

■ [Rating: 5] As the planning for and implementation of many planned special events (PSEs) can involve several
  jurisdictions with each of those jurisdictions making use of different traffic control devices or having a different
  understanding of the appropriate signs or traffic control devices to use, both a shared understanding as well as a common
  operating approach explained in a guide would be beneficial to local governments. Based on what was learned from a
  2008 FHWA study, both the economic benefits and the need to find ways to alleviate congestion are only some of the
  reasons why good guidance with regard to temporary traffic control plans would be invaluable to the localities who
  manage these events.

Research Advisory Committee
■ This has limited value for Montana (greater than10,000 attendees)




                                                             IV-111
PART IV: Summary of Comments                                                                                                  13-Apr-11
Reviewer        Comments                                                                                   Distribution of Ratings



Item #142:       Development of Bench Test Method For Determining
                                                                                                           NR   0   1    2     3   4    5
                                                                                               (17) SCOR        1   6    4     2   2    2

E-05             Manning's Roughness For Culverts                                              (46) RAC    2    5   11   10   10   4    3



Standing Committee on Research
■ Not critical for culvert design. Most are inlet control.

■ Could result in some good information to verify the roughness coefficients currently being used.

■ Culvert materials are about three in number and do not warrant research on the n-value as a top priority.

■ [Rating: 3] The culvert industry has introduced a myriad of new pipe shapes, materials, and applications in recent years.
  One result are values that often seem to conflict and vary for a given application. Additionally, there are concerns on the
  independence of the data/value derivation. Establishing technically justifiable methods to establish roughness will
  provide owners a means to evaluate and apply them within design and analysis applications.
Research Advisory Committee
■ The results of this study would have minimal benefit and difficult to apply to field conditions. Other factors in natural
  streams are much less understood and hence this research would provide no significant improvement in calculation
  accuracy.

■ Related Projects have been completed

■ Interesting, maybe a U of MN topic?

■ This topic is being researched elsewhere

■ Don't see a need to independently verify roughness values from vendors

■ The proposed study is appropriate for NCHRP. The problem statement needs additional information as to what type of
  culverts this study would focus on. The problem statement states 57% of pipe materials used in 1999 on Federal aid
  culverts was concrete. Roughness values for concrete are well understood. The problem statement mentions roughness
  values for fish passage which are typically not a function of the culvert material type but the size of sediment placed in
  the culvert.


Item #143:       Integrating Right-of-Way Acquisition and Utility
                                                                                                           NR   0   1    2     3   4    5
                                                                                               (17) SCOR        4   5    2     1   3    2

D-24             Coordination in Alliance Contracts                                            (46) RAC    1    7   9    8     6   11   3



Standing Committee on Research
■ Important research status quo or the lack of coordination creates many costly R/W blunders

■ Alliance contracts are gaining in popularity, and are beginning to be used in the U.S. It is critical to identify the role of,
  and strategies for, an optimum participation of right-of-way acquisition and utility coordination activities in alliance
  contracts.

■ ADOT structure is an excellent model to ensure that the public interest is protected. The current structure enables
  consultation and encourages effective coordination while allowing independent analysis within ADOT's program areas.
  Legislative intent (as reflected in laws passed by the US Congress) sustains this perspective and provides for separate
  legal sections for these program areas.

■ [Rating: 4] Alliance contracting is more complex than standard contracting processes and involve more "open" sharing of
  information and resources than design-build approaches, and would require re-evaluation and possible re-formulation of
  current contracting approaches. The idea is to assemble a "joint" team of agency and contractor employees and

                                                             IV-112
PART IV: Summary of Comments                                                                                                    13-Apr-11
Reviewer         Comments                                                                                    Distribution of Ratings

  effectively negotiate solutions to issues that present best value to all parties. Used in other countries, this may be
  available in other industries, and would be examined for potential highway-development project use in the US.

Research Advisory Committee
■ Since ROW is going with consultants this might have some benefits to MDOT

■ While Alliance Contracts are gaining in popularity, this isn't a critical research project at this time.

■ ODOT does not participate in Alliance Contracts.


Item #144:        Crash Testing of Low Tension Cable Median Barriers
                                                                                                             NR   0    1    2    3   4   5
                                                                                                (17) SCOR         1    6    2    4   3   1

G-30                                                                                            (46) RAC     2    7    11   7   11   6   1



Standing Committee on Research
■ Fully testing even one application of cable median barriers is very expensive. I'm not sure this can be done for $250k.

■ We have completed studies within the DOT -- in addition, we no longer install low tension cable and assume this is the
  case for many of the other states.

■ There is a need to advance a better understanding of low tension cable median barrier applications.

■ Does not apply to Arizona system.

■ [Rating: 2] There is considerable emerging research on the design, placement, and maintenance of cable median barriers,
  including NCHRP Project 22-25 “Guidelines for Design & Maintenance of Cable Median Barriers.” The proposed focus
  on generic, low-tension cable median barriers on mildly sloped medians is contrary to current trends.
Research Advisory Committee
■ Relegated research already planned.

■ Should federal funds be used to test a state (NCDOT) median barrier system? Also, the Panel reviewer states: "Plans are
  currently underway to conduct crash tests of cable barrier on slopes to determine if MASH test requirements should be
  revised to include this test condition." It would be best to defer this Problem Statement till the MASH crash tests of cable
  barrier on slopes are completed.

■ Crash testing for low tension cable barriers is needed

■ Although we're implementing these statewide, more performance information is needed.

■ Very important to North Carolina to validate the solid performance of our low tension non proprietary three cable
  system.

■ Ohio does not use low tension cable median barriers.

■ Low probability of success. Will have to overcome unsuccessful crash test of these conditions, albeit with a non-standard
  crash test vehicle.


Item #145:        Adequate Fall Protection Systems Are NOT Available to
                                                                                                             NR   0    1    2    3   4   5
                                                                                                (17) SCOR         3    5    3    2   1   3

D-17              Workers on Elevated Highway Signs                                             (46) RAC     2    11   7    7   12   2   4



Standing Committee on Research
■ Problem statement cites alarming but unsubstantiated statistics. If stats are correct, this is high priority, but it needs better
  problem ID.
                                                             IV-113
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings


■ We do all of our overhead sign work from a bucket truck with lift protection, and believe that is common practice in the
  industry.

■ This is a very worthwhile project that would help save lives and reduce injuries. I would also recommend that they look
  at incorporating lifting points for setting the signs as well.

■ Caltrans has developed a policy and practice for this issue.

■ [Rating: 3] Fatality data from National Work Zone Safety Information Clearinghouse: "Fatal occupational injuries at road
  construction sites by selected characteristics, 2004-2008" indicated that work zone fatality under the "Fall" category is
  not a major concern (3 to 13 per year).
Research Advisory Committee
■ Proposer can resubmit in future if can substantiate need.

■ I would rate this one a “3”. Although it may be beneficial information to establish these criteria for work zone safety, the
  recipient would be the contractors in this state since we contract out mostly all work on overhead sign structures. The
  only benefit we would have would come from the results of the study and how it would play into future OSHA training
  for our staff to ensure the contractor is properly protected.

■ The fall protection rules are well-established and can usually be followed by employees trained in hazard recognition and
  fall protection options. Research could be beneficial for sign structures that do not lend themselves easily to traditional
  fall protection approaches.

■ First should survey DOTs to see what practices are already out there.
Other
■ [Rating: 1] Safety belongs with the competent person responsible for carrying out the work. I doubt research would have
  an impact on what is occurring on site.

■ [Rating: 2]


Item #146:       Roadway Safety Culture and its Relationship to
                                                                                                        NR   0   1   2     3   4   5
                                                                                            (17) SCOR        2   5   5     4       1

G-16             Outcomes in City Environments                                              (46) RAC    1    5   8   15   10   1   5



Standing Committee on Research
■ Unclear how they're going to operationally define safety culture. Method not detailed enough to tell what they want to
  do. $400k too high a pilot study. The real question is how to create safety culture,

■ Unlikely that this study would benefit NH.

■ [Rating: 3] Although we agree with the importance of safety culture and its relation to safety performance, we are not
  convinced the proposed study can accomplish it's objective. The problem statement doesn't make clear what "systematic
  cultural approaches to improving local safety culture" are intended. The proposed duration and funding are inadequate to
  design, implement and evaluate a meaningful pilot study.
Research Advisory Committee
■ Cultural change will improve safety and takes leadership, not research.

■ The authors of Problem Statement state that: "The primary objective of this research is to identify whether or not
  systematic cultural approaches to improving local safety culture are beneficial and cost effective." As the Panel reviewer
  states, "Cultural changes take a long time and commitment beyond a research project. The proposed time frame of 24
  months seems to be inadequate to evaluate if changes have occurred."

                                                           IV-114
PART IV: Summary of Comments                                                                                               13-Apr-11
Reviewer        Comments                                                                                 Distribution of Ratings

■ Good concept/need but high cost.

■ I like this as it gets at how effective our programs are and looks at outcomes

■ NHTSA should fund; not NCHRP

■ How much cultural change can we expect to influence?

■ Rhull monitor


Item #147:        Investigation of Whether Separated Bikeways Can
                                                                                                         NR   0   1   2     3   4   5
                                                                                             (17) SCOR        5   4   1     2   4   1

G-41              Attract Additional Cyclists in North America, and the                      (46) RAC    1    7   8   14    9   4   2

                  Estimation of Associated Public Health, Climate, and
                  Congestion Reduction Benefits
Standing Committee on Research
■ Related research has been done. It is a very expensive congestion reduction method per trip. The main purpose of
  providing separated bikeways has been recreational.

■ We already know the benefits of getting folks off the road and onto a bike... and question if research will be able to
  predict the attraction rate.

■ This project seems to be a precursor to Problem G-03. It would be good to identify the attractiveness of a separated
  bikeway prior to developing guidelines. The investigation must consider the differences between urban and rural areas of
  the country. The results could benefit many States and MPOs as they develop/update the bicycle plans and help address
  the issues of GHGs and livability.

■ Data would be helpful to inform decisions about on-road vs. off-road facilities.

■ AASHTO Guide for the Development of Bicycle Facilities states that "when two-way shared use paths are located
  immediately adjacent to a roadway, some operational problems are likely to occur," and cites nine specific types of
  problems. Research has documented safety and operational problems of these types of facilities so why would we want
  to investigate demand.

■ [Rating: 2] Not sure whether there is enough research/information to establish separated bikeways is the recommended
  design approach. Until this approach is accepted, it is pre-mature to conduct any benefit analysis.
Research Advisory Committee
■ Need more understanding of motivations and constraints to bicycling, and to safe and cost/effective bike improvements.
  Not clear this study will do that.

■ Based upon review of the proposal and other reviewer comments, it does not appear that there is a high degree of
  probability of this research being successful.

■ Interesting

■ Is this really needed with the local, county and state governments not able to take care of existing roads much less adding
  additional bike lanes?

■ If conducted, combine with G-03

■ This research related to separated bikeways may be most important at this time and support future efforts to develop
  better design standards G-03.
Other
                                                           IV-115
PART IV: Summary of Comments                                                                                              13-Apr-11
Reviewer        Comments                                                                               Distribution of Ratings

■ [Rating: 1]


Item #148:       Appropriate Number of Destination Names on Various
                                                                                                       NR   0   1    2     3   4   5
                                                                                           (17) SCOR        3   4    3     4   3

G-06             Guide Signs                                                               (46) RAC    2    8   13   7     7   6   2



Standing Committee on Research
■ Scope of this problem statement is too narrow and the urgency/payoff potential is low.

■ Unclear whether this will advance the state of practice in any meaningful way, given current body of research,
  engineering judgment, and MUTCD guidance.

■ [Rating: 1] The MUTCD already allows for 4 destinations on guide signs. A recent Canadian study supported this
  number.
Research Advisory Committee
■ This Problem Statement would apply to low-volume or low-speed locations. Providing additional information on guide
  signs is more problematic, in terms of safety impacts, in high-volume or high speed locations.

■ Has potential benefit if it would result in a definable safety standard.

■ The research may assist us in discussing guide sign requests with department executives and legislators


Item #149:       Analyzing Driver Distractions from Outside the Vehicle
                                                                                                       NR   0   1    2     3   4   5
                                                                                           (17) SCOR        2   6    5     1   2   1

G-14                                                                                       (46) RAC    1    7   11   10    8   6   2



Standing Committee on Research
■ Considerable research already exists on the outside distractions we can control. Statement does not describe the proposed
  study or its possible contributions adequately. Duration and budget are low for a before/after study of crash impacts.

■ Need more money and time to conduct an evaluation that yields meaningful results.

■ FHWA is currently conducting a study that should be evaluated prior to beginning this study. Suggest combining this
  research with G-28.

■ [Rating: 1] FHWA has approved funding a research project looking at this exact topic. The project will begin during FY
  2011.
Research Advisory Committee
■ The FHWA also has a driver simulator study on this subject nearing completion.

■ According to the NHTSA, driver distractions are the leading cause of most vehicle crashes and near-crashes. This
  proposal will evaluate the relationship outside the vehicle and the driver. The probability of this research being
  successful is unknown.

■ Related to Overhead sign structure inspection

■ We can appreciate the intent but not convinced this effort would yield substantial new knowledge or additional tools to
  aid in this effort.

■ FHWA already has a driver simulator study on this subject nearing completion.

■ Sounds like a question the SHRP 2 naturalistic driving study should address. Premature?

                                                            IV-116
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings

■ FHWA Administrator Rhull

■ Finding adequate study data might be difficult


Item #150:       Framework for a Comprehensive Tribal Asset
                                                                                                          NR   0   1    2    3   4   5
                                                                                              (17) SCOR        2   7    3    2   3

B-17             Management System                                                            (46) RAC    1    8   11   8    7   7   3



Standing Committee on Research
■ It is suggested that a better use of resources would be modifying existing technologies to meet the objectives of this
  proposal.

■ This may be better as a synthesis

■ Asset mgt for tribes may resemble many other local government agencies. Should emphasize unique requirements.

■ combine B 14-17

■ Better use of these funds could be on an actual case study with a specific tribe such as a small or medium-sized tribe.
  Apply the basic AMS tools and guidelines to see if there is a cost savings. In general, tribes have a good idea of how to
  prioritize and address root causes to infrastructure needs. Tribal investment strategies for transportation infrastructure is
  generally practical.

■ [Rating: 5] This problem statement reflects the FHWA corporate view. It is a response to some of the critical safety
  needs to Tribal lands, as identified by Tribal transportation practitioners. The results from this research project will be
  applicable to many Tribal communities across America.
Research Advisory Committee
■ See AASHTO TAM Guide.

■ Asset Management Systems exist in most States. Over the past 20 years, Transportation agencies have created entire
  units to manage infrastructure assets. With the statistics being what they are on tribal land, a "Framework for
  Comprehensive Tribal Asset Management System" is overdue. Payoff is in maintenance of an improved transportation
  system and long-term safety.

■ Will facilitate prioritized planning/development efforts.

■ What is the difference in an Asset Management System for local, county, or state governments? Could you not use the
  Asset Management information supplied to these local, county, and state governments.

■ There are current management systems that could be implemented.

■ not convinced there is that much difference between tribal asset management and state DOT asset management.

■ A direct link from highway safety to asset management was not presented. Perhaps the money would be better spent on
  other safety initiatives.

■ No benefit to us. This should be a pooled fund study of states with large numbers of Native American tribes.

■ Native American fatalities in WA are approx 3.2x higher than for non-Indians. WDSOT is committed to working with
  tribes to address this disproportionate impact. This asset management system will help tribes determine the most
  effective ways to spend limited transportation funding. Suggest combining B14, 15, 16 & 17 together for $250-300K
Other
■ [Rating: 2] Suggest combining B-14, 15, 16, & 17 for a total of $250-300K

                                                              IV-117
PART IV: Summary of Comments                                                                                                  13-Apr-11
Reviewer        Comments                                                                                  Distribution of Ratings



Item #151:       Temporary Transverse Hot Mix Asphalt Tapers
                                                                                                          NR   0    1    2     3   4   5
                                                                                              (17) SCOR        1    5    8     2   1

D-16                                                                                          (46) RAC         6    8    16    9   6



Standing Committee on Research
■ Agree with FHWA reviewer.

■ HMA tapers with improved safety, rideability, and density.

■ synthesis

■ More research is needed. Obtaining pavement density may be the biggest issue.

■ [Rating: 3] While safety is of paramount importance, we are not aware that temporary asphalt tapers are a national
  concern.
Research Advisory Committee
■ These temporary transverse taper are generally used for short term for overnight or over the weekend. They're designed
  for short term and signed for the public to see them. Lengths of the tapers are constructed based on traffic volume and
  the type of roadway.

■ Minimal return for effort.

■ Taking care of

■ not an issue that need study

■ It would appear that local public input on ride comfort over the years would guide states on appropriate tapers lengths for
  various asphalt lift thicknesses.


Item #152:       Tribal Seat Belt Usage Trends and Strategies
                                                                                                          NR   0    1    2     3   4   5
                                                                                              (17) SCOR         3   8    1     3   2

G-18                                                                                          (46) RAC    2    11   14   5     8   2   3



Standing Committee on Research
■ Tribal culture differs meaningfully from that of outsiders, stressing community good over personal gain. Strategies to
  increase belt use and other compliance would be quite different. This statement doesn't discuss research methods, but
  the problem deserves attention.

■ Objectives overlap the ancillary objectives of current study, NCHRP 17-49

■ See the Western Transportation Institute and Montana DOT programs that address seatbelt usage in Tribal communities.

■ [Rating: 5] This problem statement reflects the FHWA corporate view. It is a response to some of the critical safety
  needs to Tribal lands, as identified by Tribal transportation practitioners. The results from this research project will be
  applicable to many Tribal communities across America.
Research Advisory Committee
■ The collection of utilization data, while important, will not address the problem.

■ Collecting tribal seat belt usage data will not increase seat belt usage. Resources would be better utilized in educational
  efforts.

■ State specific - should be a pooled fund study.

                                                            IV-118
PART IV: Summary of Comments                                                                                                13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings

■ The literature search provided no information on this subject. The Native American fatality rate in Washington State is
  disproportionately high. The WTSC does outreach to tribes regarding seat belt usage, but this research could help them
  and WSDOT refine our efforts.

■ This seems best suited for a pooled fund study in those states with significant Native American populations.


Item #153:       Advance Lane Speed Indicators for Each Lane Attached
                                                                                                        NR   0    1    2     3   4   5
                                                                                            (17) SCOR        7    5    3     1       1

G-09             to Overpass's                                                              (46) RAC    2    14   12   9     6       2



Standing Committee on Research
■ Problem will be examined through various Active Traffic Management deployments occurring around the country.

■ Voting none for this due to cost, lack of urgency and belief that DMS's & TOC (or on-site Alert team possibly) fulfill this
  need to shift drivers from blocked lanes. Many drivers use the opportunity to shift lanes to their advantage anyway thru
  late lane merges to avoid queue.

■ [Rating: 1] Systems like the one proposed are already being evaluated in Minn., WA., CA., and other states. FHWA is
  currently evaluating other more promising Active Management Techniques. Installation of field equipment in this scale
  is not a appropriate use of NCHRP funds.
Research Advisory Committee
■ Minnesota, Washington, California, and other states are already installing these types of devices. The FHWA has
  research underway on Active Traffic Management techniques. Installation of field equipment at this scale is not
  appropriate for the NCHRP.

■ Reader board message could create mass lane changes at sign, creating jams.

■ Very expensive. Minimal benefit. Even if the system worked perfectly, it would not help much to reduce overall delays

■ There are ongoing technologies being tested for variable speed limits.

■ Not worth $5 million.

■ Too large of a project

■ Benefits are not defined.


Item #154:       Driverless Cars: Assessing Imminence, Advantages, and
                                                                                                        NR   0    1    2     3   4   5
                                                                                            (17) SCOR        6    8    3

G-21             Disadvantages, and Recommending Policy Positions for                       (46) RAC    1    14   12   10    4   3   1

                 the States
Standing Committee on Research
■ This is essentially a "think piece" and doesn't address a pressing issue to most DOTs.

■ Why isn't this being addressed with the Intellidrive research/initiative?

■ Still premature.

■ Promise of handbook of processes, insight into technological benefits and perils, lack of need for policies.

■ The proposed study is trying to answer some of the same questions for autonomous travel that were addressed in a study
  conducted back in 1997 by the National Automated Highway System Consortium. Please check the following link:
  http://tris.trb.org/view.aspx?id=675721.
                                                           IV-119
PART IV: Summary of Comments                                                                                         13-Apr-11
Reviewer        Comments                                                                                Distribution of Ratings


■ [Rating: 3] This project proposes to identify obstacles to autonomous vehicles on our highways, conduct a cost-benefit
  assessment, and develop a template for a future demonstration project. While this is all interesting work, we feel that the
  greatest initial research need is on the cost-benefit assessment portion. However, cost feasibility issues will likely make
  it decades until large numbers of privately owned autonomous vehicles are operating on our highways; making this less
  of a priority with respect to FHWA’s top research concerns.
Research Advisory Committee
■ We need to be doing some research in this area since the technology is there to do driverless cars.

■ This can wait.

■ This research seems premature. With little knowledge of what form driverless vehicles could take discussing how we
  are going to deal with them at this time makes little sense; any conclusions drawn will be dated and perhaps even
  irrelevant in the future when this discussion is really needed and is more pressing and relevant. It would be more
  productive at this point to investigate what roles driverless vehicles could serve based on the benefits they could deliver
  and use the resulting recommendations to help focus the discussion on the development of driverless vehicles.




                                                           IV-120

								
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