Methods for assessing the effectiveness of potential vehicle-miles-traveled (VMT) mitigation measures

Under the Transportation Analysis Framework (TAF), developed in response to SB 743, California Department of Transportation (Caltrans) must analyze the impacts of projects on the State Highway System (SHS) on vehicle-miles-traveled (VMT) as a part of the environmental review process under the California Environmental Quality Act (CEQA). The goal of this project is to develop guidance and methods for assessing VMT reduction for various potential mitigation measures for SHS projects. The first objective of the project is to develop a list of potential mitigation measures drawn from existing sources and with input from stakeholders, that may be appropriate for VMT mitigation for SHS projects; an explanation of the role that Caltrans can play, directly or indirectly, in their implementation; and a discussion of the contexts in which they are most appropriate and effective. The second objective is to assess methods for estimating the effectiveness of potential VMT mitigation measures. Methods to be assessed include regional travel demand forecasting models, “off-model” adjustment methods, the California Air Resources Board’s quantification methods, the updated CalEEMod tool, and others. The third objective is to explore the possibility of developing an accessibility tool that can be used for estimating the effects of VMT mitigation measures.


  • English


  • Status: Active
  • Funding: $599594
  • Contract Numbers:

    Caltrans 65A0940

  • Sponsor Organizations:

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Managing Organizations:

    METRANS Transportation Consortium

    University of Southern California
    Los Angeles, CA  United States 
  • Project Managers:

    Hong, Jennifer

    Bruner, Britain

  • Principal Investigators:

    Handy, Susan

  • Start Date: 20220401
  • Expected Completion Date: 20240331
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers

Subject/Index Terms

Filing Info

  • Accession Number: 01902416
  • Record Type: Research project
  • Source Agency: Pacific Southwest Region University Transportation Center
  • Contract Numbers: Caltrans 65A0940
  • Files: UTC, RIP
  • Created Date: Dec 15 2023 2:45PM