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					Proposed Changes to Modeling
Guidelines

presented to
RTP Modeling Guidelines Update Sub-Committee


presented by
Ron West




September 30, 2009

                           Transportation leadership you can trust.
    RTP Modeling Guidelines – Comment Resolution

                Page # /
    ##   Date   Section    Agency   Comment                      Response



                                                                 May not need to be added to
                                    What happened to the state   RTP Guidelines … instead,
                                    recommendations?             are recommendations to be
                                                                 brought to CTC Staff for
     1   9/22   General    SANDAG
                                    MPOs need support from       consideration.
                                    statewide modeling
                                    initiatives...               Caltrans needs to follow up
                                                                 on the item with CTC Staff.




1
    RTP Modeling Guidelines – Comment Resolution

                Page # /
    ##   Date              Agency   Comment                        Response
                Section

                                    The requirement/
                                                                   The style of the RTP
                                    recommendation section
                                                                   Guidelines as a whole is only
                                    that referencing statutes
                                                                   to reference the appropriate
                                    should transcribe the
                                                                   statute.
     2   9/22   General    SANDAG   language of those statutes
                                    into this document.
                                                                   We may be able to create an
                                                                   appendix with detailed statue
                                    This should be a one-stop
                                                                   referencing.
                                    shop for find information.

                                                                   PDFs can have web links
                                    Will this document be          embedded in them, we could
                                    turned into a HTML site with   also convert the document
     3   9/22   General    SANDAG
                                    links to the applicable        into a HTML version.
                                    references?
                                                                   Check with CTC Staff.




2
    RTP Modeling Guidelines – Comment Resolution

                Page # /
    ##   Date              Agency   Comment                        Response
                Section

                                                                   Format will be changed to
     4   9/22   General    SANDAG   Bullets are hard to read.
                                                                   numbers.


                                    Models are used to assess
                                    the benefits of various
                Page 1,                                            Will change wording to focus
     5   9/22              SANDAG   transportation alternatives,
                1st para                                           on looking at alternatives.
                                    not to support the
                                    conclusions of it.




                                    Also mention the supply
                Page 1,                                            Will add text mentioning
     6   9/22              SANDAG   side - highway and transit
                2nd para                                           highway and transit networks.
                                    networks too.




3
    RTP Modeling Guidelines – Comment Resolution

                   Page # /
    ##      Date                Agency   Comment                       Response
                   Section
                                         Consider changing
                                         automobile to SOV & HOV       Will modify automobile and
                   Page 1,
      7     9/22                SANDAG   – carpool would be            carpool to specifically
                   2nd para
                                         considered part of the nest   mention SOV & HOV.
                                         for auto.


                                         Disaggregate models, such
                                                                       Change language to read
                   Page 1,               as ABMs, are micro-
      8     9/22                SANDAG                                 "travel modeling" instead of
                   5th para              simulation models, not
                                                                       "statistical modeling"?
                                         statistical models.




                                                                  rd
                    Page 1,              Suggested changes to 3        Substitute language to be
     9/10   9/22                SANDAG
                   3rd bullet            bullet on page 1              provided by SANDAG.



4
    RTP Modeling Guidelines – Comment Resolution

                  Page # /
    ##     Date               Agency   Comment                     Response
                  Section
                                       Suggested re-wordings       Re-wordings - ok.
     11-          Page 1,
           9/22               SANDAG
     14           2nd para             Last sentence can be        Last sentence will be deleted
                                       added as recommendation.    as it is referenced in 3.30.3.


                  Page 2,              Discussion of 4-step        Request that ABM discussion
     15    9/22               SANDAG
                  1st para             models, but none of ABMs.   be added.



                  Page 2,              Transit assignment should
     16    9/22               SANDAG                               ok.
                  5th para             be mentioned

                                       Change to bullets.
                  Page 2-3,
                                       “Should” statements
     17    9/22    1st-3rd    SANDAG                               Ok on both items.
                                       attached here are not
                   bullets
                                       included in the
                                       recommendations below.

5
    RTP Modeling Guidelines – Comment Resolution

                 Page # /
    ##    Date               Agency   Comment                          Response
                 Section
                                                                       We followed style of the 2007
                                                                       RTP Guidelines. At the end of
                                                                       the section, all the legislation
                                                                       attached to the shoulds and
                  Page 3,             Why is there a separate
                                                                       shalls is listed.
                 Modeling             recommendation from the
     18   9/22               SANDAG                                    2007 Guidelines includes a
                   Perf.              bolded recs below? Is there
                                                                       brief sentence attached to the
                 Measures             a distinction?
                                                                       legislation reference.
                                                                       Non-bold recommendations
                                                                       and requirements call outs
                                                                       can be removed.

                                      Table needed to identify
                  Page 3,
     19   9/22               SANDAG   which category each MPO,         Table will be created.
                 last para
                                      RTPA, CMA falls into
                                      Remove the cumulative
                                      nature and explicitly call out
                  Page 3,                                              Disagree on need for this
     20   9/22               SANDAG   the recommendations and
                 last para                                             change.
                                      requirements at each level
                                      even if it repeats.
6
    RTP Modeling Guidelines – Comment Resolution

                 Page # /
    ##    Date                Agency   Comment                        Response
                 Section


                  Page 4,              This subheading has two        This was following the style
                 Category              recommendation sections.       of the 2007 RTP Guidelines.
     21   9/22    B, and in   SANDAG   The initial recommendations    The committee needs to
                    other              should be moved down into      decide on the formatting here
                 locations.            the “should” list.             and I will make the change.


                 Page 4,               Land use characteristics
                 Category              can be incorporated into the
     22   9/22                SANDAG                                  Text will be changed.
                  B, 1st               model processes or by
                  bullet               post-processing.
                 Page 4,                                              Tried to group topics
                 Category              Each “should” should be it’s   together, but can undone if
     23   9/22                SANDAG
                  B, 1st               own bullet.                    the committee decides that
                  bullet                                              would be best.




7
    RTP Modeling Guidelines – Comment Resolution

                 Page # /
    ##    Date              Agency   Comment                      Response
                 Section

                                                                  This was wording of 2007
                 Page 4,             Where does the focus on      addendum. It may be time to
                 Category            VMT come from? Many          reword this item to focus on
     24   9/22              SANDAG
                  B, 3rd             factors contribute to GHG    greenhouse gas reductions
                  bullet             reductions.                  and not focus on surrogates
                                                                  like VMT, VHT, etc.

                                     Post processing should not
                 Page 5,             be encouraged at any time.
                 Category            Post processing should be    Agree. But don’t see need to
     25   9/22              SANDAG
                  C, 1st             considered an intermediate   change language.
                  bullet             step to full model
                                     integration.
                                     Instead of employment
                                     type, segmentations based
                 Page 5,
                                     on income and time of day
                 Category
     26   9/22              SANDAG   are more important. It is    Discuss at next meeting.
                  C, 4th
                                     hard to implement
                  bullet
                                     employment segmentation
                                     in 4-step model anyway.
8
    RTP Modeling Guidelines – Comment Resolution

                 Page # /
    ##    Date              Agency   Comment                        Response
                 Section


                 Page 5,
                                     “or”, in comparison to what?   That is the wording from the
                 Category
     27   9/22              SANDAG   This clause seems              2007 addendum. Will
                  C, 9th
                                     incomplete.                    discuss at meeting.
                  bullet


                                     Consistency with federal
                 Page 6,             DOT guidance. The actual
                                                                    Agreed. Will change "worse"
     28   9/22   Category   SANDAG   conformity designations are
                                                                    to "above"
                    D                serious, severe, and
                                     extreme.
                 Page 6,
                 Category            Various wording changes to     Agreed. Will make the
     29   9/22              SANDAG
                  D, 1st             the first bullet.              suggested changes.
                  bullet




9
 RTP Modeling Guidelines – Comment Resolution

                  Page # /
     ##    Date                Agency   Comment                      Response
                  Section

                  Page 6,
                                        If they are requirements
                  Category
     30    9/22                SANDAG   they are not should but      For discussion at meeting.
                   D, 1st
                                        shall.
                   bullet

                  Page 6,
     31    9/22    Cat. D,     SANDAG   Repetitive.                  For discussion at meeting.
                  1st bullet
                  Page 6,               Is a big leap for most
                  Category              agencies, especially those
     32    9/22                SANDAG                                For discussion at meeting.
                   D, 3rd               that do not have large
                   bullet               dedicated staffs.
                  Page 6,
                  Category              What is a joint mode-
      33   9/22                SANDAG                                For discussion at meeting.
                   D, 5th               destination choice model?
                   bullet



10
 RTP Modeling Guidelines – Comment Resolution

                 Page # /
     ##   Date                Agency   Comment                       Response
                 Section

                  Page 6,              Is CTC encouraging smaller
     34   9/22    Cat. D,     SANDAG   MPOs to consider moving       Will clarify with CTC.
                 7th bullet            to ABM and PECAS?

                                       Anything required should be
                                                                     You are correct that the
                  Page 6,              put in the requirements
                                                                     wording is not consistent.
     35   9/22    Cat. D,     SANDAG   section and specified with
                                                                     Committee to decide to call
                 8th bullet            the governing law
                                                                     this out as a shall or a should.
                                       reference.
                                       What is the state policy
                  Page 6,              justification for this? The
                                                                     Bullet is a recommendation,
     36   9/22    Cat. D,     SANDAG   local MPO boards already
                                                                     not a requirement.
                 8th bullet            establish performance
                                       criteria.

                                       SANDAG has added 8
                  Page 6,
     37   9/22                SANDAG   bulleted "shall" items to     For discussion at meeting.
                  Cat. D
                                       Category D.


11
 RTP Modeling Guidelines – Comment Resolution

                 Page # /
     ##   Date                Agency   Comment                       Response
                 Section
                                       Suggest rewrite to focus on
                                       PECAS development.
                  Page 7,              PECAS seems like the
                                                                     On agreement of sub-
     38   9/22    Cat. E,     SANDAG   statewide standard for
                                                                     committee
                 5th bullet            advanced land use
                                       modeling, and it should be
                                       encouraged directly.
                                       Change word.
                 Page 8,                                             Will change to "requirements
     39   9/22                SANDAG   Requirements are not
                 1st para                                            and recommendations"
                                       guidance.
                                                                     Agree. Legislative ties are
                                                                     listed at end of section (before
                                       Anything required should      sketch modeling section).
                 Page 8,
     40   9/22                SANDAG   have the corresponding        Still need to document
                 1st bullet
                                       legal reference.              legislation tied to the shoulds
                                                                     and shalls. This was not done
                                                                     in the 2007 addendum.


12
 RTP Modeling Guidelines – Comment Resolution

                 Page # /
     ##   Date              Agency   Comment                          Response
                 Section
                                     This is setting precedence
                                     before the statewide model
                                     is updated for this use.
                                                                      Yes, good point. Language
                                                                      needs to be added to show
                                     For this to occur, the model
                 Page 9,                                              that this is only the case after
                                     also needs to be fully
                  Inter-                                              the updated STDM is updated
                                     validated     and      peer-
                 regional                                             and released to the public.
     41   9/22              SANDAG   reviewed.
                  Travel
                   and                                                Its worth noting these
                                     MPOs statewide should
                 Modeling                                             guidelines are likely to be
                                     agree that the model is
                                                                      updated again – within the
                                     capable of handling this
                                                                      next 12 to 24 months.
                                     important function. Until this
                                     occurs, the language needs
                                     to be softer.




13
 RTP Modeling Guidelines – Comment Resolution

                 Page # /
     ##   Date                Agency   Comment                       Response
                 Section
                                                                     The sub-committee should
                                                                     discuss this point. However,
                                       For MPOs that do their own
                                                                     a key point of using the
                                       interregional HH surveys,
                 Page 9,                                             statewide model is to
                                       the process may need to be
                  Inter-                                             standardize inter-regional
                                       more formal. Consider
                 regional                                            travel projections throughout
     42   9/22                SANDAG   language similar to SB 375
                  Travel                                             the state. If one regional has
                                       +/- XX percent population
                   and                                               information counter to the
                                       disputes with DOF. (See
                 Modeling                                            statewide model, it is
                                       comment resolution
                                                                     suggested that all affect
                                       workbook for more details.)
                                                                     MPOs should be party to
                                                                     resolution of differences.
                                                                     The legislation is referenced
                                                                     below at the end of Section
                 Page 10,     SANDAG
     43   9/22                         State the law.                3.30.2 of the document for
                 1st bullet
                                                                     which the shalls and shoulds
                                                                     appear.



14
 RTP Modeling Guidelines – Comment Resolution

                 Page # /
     ##   Date                Agency   Comment                           Response
                 Section



                 Page 10,
                 Require-
                                                                         The one bullet in the shall for
                   ment
                                       Which statements above do         Section 3.30.2. The legislation
     44   9/22   Listing of   SANDAG
                                       these correspond to?              still needs to be identified for
                   State/
                                                                         the shoulds.
                  Federal
                 Statutes



                                       This ignores interaction of
                                       land use and transportation.
                                       Projected land use may be
                 Page 11,              different if transportation       Will discuss with Sub-
     45   9/22                SANDAG
                 1st bullet            infrastructure is not built due   committee.
                                       to travel times, congestion,
                                       economics of shipping,
                                       etc…
15
 RTP Modeling Guidelines – Comment Resolution

                 Page # /
     ##   Date                Agency   Comment                         Response
                 Section
                 Page 11,
                                       Post processing procedures      Sounds reasonable. Will ask
                   Con-
                                       should be reviewed and          committee for concurrence
     46   9/22   sistency     SANDAG
                                       consistent across major         and if anyone has any
                  of RTP
                                       MPOs in CA.                     preferred language.
                 Modeling

                 Page 11,
                   Model
     47   9/22     Peer       SANDAG   SANDAG votes here.
                  Review,
                 2nd bullet


                                       Does this recommendation        That is the wording from the
                 Page 13,              mean we should be               2007 addendum. Perhaps
     48   9/22                SANDAG
                 bullet "b"            providing a statistical error   someone who worked on the
                                       term?                           addendum can address.




16
 RTP Modeling Guidelines – Comment Resolution

                 Page # /
     ##   Date              Agency     Comment                        Response
                 Section

                 Page 2,
                                       Congestion is only one         Suggest change to "…such as
     49   9/22   Network    Caltrans
                                       measure of performance.        congestion…"
                 Assign

                                       Delete, "to the extent that
                 Page 3,
     50   9/22              Caltrans   data and resources permit,"    Agreed.
                 1st para
                                       in the first sentence.

                                       SB 375 and the RTAC report
                                       explicitly call for GHG
                                       emissions. Later versions of
                                                                      Suggest to use consistent
                  Page 3,              the RTAC report recognize
                                                                      language and terminology in
                 Modeling              that GHG emissions
     51   9/22              Caltrans                                  this report as used in the
                   Perf                reduction is part of the RTP
                                                                      RTAC recommendations
                 Measures              process and other issues
                                                                      report.
                                       can reinforce or impede
                                       actions that reduce GHG
                                       emissions.

17
 RTP Modeling Guidelines – Comment Resolution

                  Page # /
     ##   Date                 Agency     Comment                       Response
                  Section
                                          Sec. 450.322(f) “Develop-
                                          ment and content of the
                   Page 3,                MTP” has 3 pages of regs.
                   Federal                Requires projections,         Review has not yet been
     52   9/22                 Caltrans
                     Leg/                 alternatives analysis & AQ,   undertaken.
                    Shalls                among other requirements.
                                          Should be consistent with
                                          this CFR paragraph.
                   Page 4,                Grams per mile vary with
     53   9/22     Cat. B,     Caltrans   speed; Speed needs to be      Agreed.
                  3rd bullet              included in bullet

                   Page 6,
                                          Households don’t know         Two different topics. Split into
     54   9/22     Cat. D,     Caltrans
                                          about business rents.         two bullets.
                  7th bullet

          9/22/   Page 12,                Replace "regional" with
     55                        Caltrans                                 Agreed.
          2009     Item 'c'               "local"

18

				
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