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					    Traffic Analysis Toolbox &
Highway Capacity Manual Transition




         Tyrone Scorsone
       FDOT Systems Planning
Transportation Research Board’s (TRB)
   Highway Capacity Manual (HCM)
                                        2
  HCM     Quality/Level of Service
  (QLOS) Handbook




Facility Level Analysis   Detailed Point &
                          Segment Analysis   3
    Advantages of Analytical/Deterministic Tools




Quickly predict                                     Widely
   impacts                                         accepted




                                                              4
   LOS Planning/Preliminary
   Engineering Tools
                                                        Generalized
                     Preliminary                         Planning
                     Engineering                          Tables
                      Software




http://www.dot.state.fl.us/planning/systems/sm/los/default.htm        5
6
                       Capacity/LOS Analyses and Evaluation Tools


                                                          (Microsimulation)       CORSIM


                                                                  TRANSYT-7F
Potential Accuracy




                                                  HCM | TCQSM      (Simple Operational Analysis)
                                                   BLOS | PLOS
                                      ARTPLAN
                                      FREEPLAN        (Preliminary Engineering)
                                      HIGHPLAN

                     Generalized Tables (Generalized Planning)



                                                 Effort/Complexity                            7
Exporting Data to Highway
Capacity Software (HCS)




                            8
    Planning Uses of LOS Techniques


Initial problem identification

  Delay calculation

   Future year analysis

  Conducting alternatives analyses

Assessing development impacts

                                      9
Primary Uses of LOS Techniques


     Site Impact    Project
                   Development




       Future
        Year         Other
      Analysis



                                 10
     Transportation Impact Handbook




FDOTTransportationImpactHandbook.com



                                       11
Screen for impacts of
    Development
                        12
Screen for impacts
of Development




Screen for impacts of
    Development
                        13
The Users Perspective




                        14
                 A/B




                 C/D
Automobile LOS


                 E/F

                       15
            A/B




            C/D
Modal LOS
Bicycle

            E/F

                  16
             A/B




             C/D
Modal LOS
Pedestrian

             E/F

                   17
            A/B
                  >4 buses/hour



            C/D
Modal LOS
Bus               2 to 4 buses/hour



            E/F

                  < 1 bus/hour        18
                       Capacity/LOS Analyses and Evaluation Tools


                                                          (Microsimulation)       CORSIM


                                                                  TRANSYT-7F
Potential Accuracy




                                                  HCM | TCQSM      (Simple Operational Analysis)
                                                   BLOS | PLOS
                                      ARTPLAN
                                      FREEPLAN        (Preliminary Engineering)
                                      HIGHPLAN

                     Generalized Tables (Generalized Planning)



                                                 Effort/Complexity                          19
    Generalized Service Volume Tables…

…provide estimates of
maximum service volumes
for various types of Florida
road facilities


…represent average roadway
conditions for the state, not
representative of any single
roadway

                               …allow analysts to quickly and
                               easily compare volumes to
                               estimate LOS.
                                                                20
Types of Tables                                    (mostly used
                                                   in planning)
                  Daily Two-Way

 Urbanized       Transitioning/Urban                Rural
                                       (However, all are based on a peak
                                           hour peak direction analysis)


               Peak Hour Two-Way

 Urbanized       Transitioning/Urban                Rural




             Peak Hour Peak Direction
 Urbanized       Transitioning/Urban                Rural


                                                                     21
Service Volume Tables In General




                                   22
    Potential Applications

Quick estimate of LOS

Is there a problem?

System adequacy

Travel demand models

Roadway quick sizing
                             23
                       • Determine the maximum
                         service volumes
                          – In terms of annual average
  Table Exercise   1        daily traffic (AADT) volume
LOS=C   95,400            – In an urbanized area
                          – For a freeway with:
LOS=E   122,700              • 6 lanes




                                                          24
                       Capacity/LOS Analyses and Evaluation Tools


                                                          (Microsimulation)       CORSIM


                                                                  TRANSYT-7F
Potential Accuracy




                                                  HCM | TCQSM      (Simple Operational Analysis)
                                                   BLOS | PLOS
                                      ARTPLAN
                                      FREEPLAN        (Preliminary Engineering)
                                      HIGHPLAN

                     Generalized Tables (Generalized Planning)



                                                 Effort/Complexity                          25
Demonstration
Of LOSPLAN




                26
  LOS Planning/Preliminary Engineering Tools
  will be updated in 2012




2012




www.dot.state.fl.us/planning/systems/sm/los/   27
Highway
Capacity
Manual
Transition



             28
         Presentation Purposes

Highway Capacity Manual
Past, Present & Future



Adopting the 2010 HCM
What Has To Change


Implementing the 2010 HCM
How Long Will It Take

                                 29
      HCM/LOS History

                1985:
                Refined
              LOS Direction




  1965:
LOS Concept
                               2010:
                              Integrated
                              Multimodal
                              Perspective

                                            30
    2010 Highway Capacity Manual




                  Significant     When to
2010 HCM
                   changes        phase in?

To be published   New arterial      Receiving
  this month      performance    implementation
                    measure         inquiries
Replaces 2000
    HCM           Multimodal
                                                  31
          2010 HCM Implementation Issues

             Why Not
            Transition
          Immediately?

    LOS         Technical    Impacts     Consistency


                                           Need for
                              Rules
“Standard K”                              State-wide
                Arterials
   Factors                                Consistent
                             Policies
                                         Response to
                Freeways
Rule Update                              Phasing in of
                            Procedures
                                          2010 HCM

                                                       32
       What is “Standard K”?


Rather than having “K” be a traffic variable,
   make it a fixed parameter based on:


                                     Facility
Area Type
                                      Type
“K” Factor: Ratio of peak hour traffic to AADT
                                                 33
        Importance of
        LOS Standards and K Factor

Promotes Better     • Time and cost savings to FDOT
 Transportation     • Update to latest research



   Consistency:     • Within Department
Planning Through    • Throughout development community
     Design         • Simple to understand



                    • Positive for Development
Sensible Approach   • Supportive of Growth Management


                                                         34
2 Arterial Classes




         1           2
                         35
        Implementation Schedule
 July ‘11      January ‘12          July ‘12     December ‘12

Refine HCM Analyses

   Implement “Standard K” Factors

                        Update LOS Standards

                                    Update Procedures &
                                        Guidelines

              Coordination, Transition & Adoption
                                                           36
QUESTIONS?




             37
FDOT’s transition plan to the 2010 HCM
represents a logical comprehensive
process which includes evaluating a few
key 2010 HCM changes, possibly
implementing technical changes to
current practice, possibly updating its
level of service standards, and updating
its own HCM-based software. FDOT
recognizes it cannot require this
transition period be applied to outside
entities; however, it requests those
entities accept this relatively short
transition period.
                                           38

				
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posted:2/16/2013
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