Synthesis of Information Related to Highway Practices. Topic 54-21. Practices to Address Climate Change in the Transportation Planning Process

Preliminary Scope Climate change is a problem that requires multidisciplinary expertise and multi-level collaboration to address. How state departments of transportation (DOTs) address climate change in transportation planning can play an integral role in successfully meeting this challenge. DOT practices on addressing climate change in their federally required statewide long-range transportation plans (LRTPs) and a statewide transportation improvement programs (STIPs) vary from state to state. Practices could include policies on greenhouse gas mitigation, investment and programming selection criteria, or engineering directives on resiliency. Additionally, the tools, data, and methodologies in use by DOTs vary for estimating climate change implications, resiliency, or emissions. The objective of this synthesis is to document state DOT current practices related to climate change (reducing GHG emissions and increasing resiliency) in their LRTPs and STIPs. Information to be gathered includes (but is not limited to): • Strategies in use by DOTs (or planning to use) reduce emissions and enhance resiliency in the transportation network; • Policies, goals, or other documented commitments to reducing greenhouse gases or increasing resiliency; • Approaches and methodologies to quantifying emissions, measuring system impacts, and forecasting change (including data sources); • Mechanisms to measure or forecast extreme weather events and frequencies; • Climate risk quantification and incorporation into LRTPs and STIPs; • DOT practices to coordinate with metropolitan planning organizations and other partner agencies (including local governments) on greenhouse gas reductions or resiliency; and • Where in the planning process is climate change addressed. Information will be gathered through a literature review, a survey of state DOTs, and follow-up interviews with selected agencies for the development of case examples. Information gaps and suggestions for research to address those gaps will be identified. Information Sources (Partial): • National Academies of Sciences, Engineering, and Medicine. 2022. Methods for State DOTs to Reduce Greenhouse Gas Emissions from the Transportation Sector. Washington, DC: The National Academies Press. • National Academies of Sciences, Engineering, and Medicine. 2014. Strategic Issues Facing Transportation, Volume 2: Climate Change, Extreme Weather Events, and the Highway System: Practitioner’s Guide and Research Report. Washington, DC: The National Academies Press. • U. S. Department of Transportation, Office of the Secretary of Transportation. 2021. Climate Action Plan: Revitalizing Efforts to Bolster Adaptation & Increase Resilience. Washington, DC. • U. S. Government Accountability Office, Report to Congressional Requesters. 2021. Climate Resilience: Options to Enhance the Resiliency of Federally Funded Roads and Reduce Fiscal Exposure. Washington, DC. TRB Staff Trey Joseph Wadsworth Phone: 202-334-2307 Email:     Meeting Dates First Panel: September 13, 2022 Teleconference with Consultant: TBD Second Panel: June 6, 2023 Topic Panel TBD


  • English


  • Status: Programmed
  • Funding: $55000
  • Contract Numbers:

    Project 20-05, Topic 54-21

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Wadsworth, Trey

  • Start Date: 20220531
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01845546
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-05, Topic 54-21
  • Files: TRB, RIP
  • Created Date: May 16 2022 3:04PM