1 / 19

A Snapshot of Travel Modeling Activities

A Snapshot of Travel Modeling Activities. 12 th TRB Planning Application Conference May 20, 2009 Fred Ducca & Supin Yoder, FHWA David Kurth, Cambridge Systematics. Presentation Outline. Impetus of the Snapshot Project NAS Report 288 Summaries of MPOs with good practice.

aloysius
Télécharger la présentation

A Snapshot of Travel Modeling Activities

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A Snapshot of Travel Modeling Activities 12th TRB Planning Application Conference May 20, 2009 Fred Ducca & Supin Yoder, FHWA David Kurth, Cambridge Systematics

  2. Presentation Outline • Impetus of the Snapshot Project • NAS Report 288 • Summaries of MPOs with good practice

  3. TRB Special Report 288:Metropolitan Travel Forecasting • Determine state of practice in metropolitan travel forecasting • Determine capability of models to address current issues • Recommend actions needed to ensure models can address current issues

  4. Snapshot of Good Modeling Practice • In-depth understanding of MPOs with good modeling practice • Interviewed five MPOs • Atlanta, Columbus, Dallas-Fort Worth, Sacramento and Seattle, • Project Report: A Snapshot of Travel modeling Activities • Detailed technical reviews of Activity Based Models • Columbus & Sacramento • Project Report: Activity Based Travel Demand Forecasting, Reviews of MORPC and SACOG Modeling Practices

  5. Snapshot – MPO Models

  6. Snapshot – MPO Model Components

  7. Snapshot – MPO Model Components

  8. Snapshot – MPO Model Components

  9. Snapshot – MPO Typical Applications

  10. MPO Interview Topic Areas • Role of the travel model in the transportation planning process; • Primary challenges and emerging issues regarding use of travel models/forecasts; • Support for the travel modeling process; • Future plans for travel model updates.

  11. MPO Interview Topic Areas • Role of the travel model in the transportation planning process; • Models play a central role • More pronounced as funding lags needs

  12. MPO Interview Topic Areas • Primary challenges and emerging issues regarding use of travel models/forecasts; • 2 broad groups of challenges • Those addressed with existing models, ad hoc analysis, major assumptions, or less detail than desired. • Those that cannot be credibly addressed with current models.

  13. MPO Interview Topic Areas • Support for the travel modeling process; • Strong in each of the areas • Financial support provides evidence • Annual budgets for modeling, planning, data collection, land use, consultants & misc. ranged from $1.85 M – $5.6 M

  14. MPO Interview Topic Areas • Future plans for travel model updates • 2 MPOs have ABMs • 3 MPOs developing ABMs

  15. Snapshot – Findings • Fiscal constraint puts more focus on evaluation • Need to establish model credibility with MPO Board • Current models’ limited ability to address emerging issues • Short term solutions developed

  16. Snapshot - Findings • Motivation for activity models • Activity based models promising • Address more complex issues • Parallel Approach to Model Improvements • Continuous improvement to existing four step model • Incremental move to advanced model • Need for time dependent network models • SHRP C-10

  17. Snapshot - Findings • Need for freight models • Challenges • Develop and maintain quality data • Limited resources for advanced model • Training • Computer resources • Budgetary • Staffing for modeling / training

  18. Snapshot - Conclusions • Four step remains basic approach • Inherent shortcomings • Need for quality data • Context specific applications • Obstacle to improvement • Limited resources • Findings support TRB SR 288

  19. Links • TRB SR 288 • http://www.trb.org/news/blurb_detail.asp?id=7821 • Snapshot of Good Modeling Practice • http://tmip.fhwa.dot.gov/resources/clearinghouse/browse/list/6/1276 • TMIP • http://tmip.fhwa.dot.gov/

More Related