NCHRP WebResource 1

PUBLISHED DATE - March 8, 2022

This website was reviewed by the technical panel and accepted for publication according to procedures established and overseen by the Transportation Research Board and approved by the National Academies of Sciences, Engineering, and Medicine.

The opinions and conclusions expressed or implied in this website are those of the researchers who performed the research and are not necessarily those of the Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; or the program sponsors.

The Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; and the program sponsors do not endorse products or manufacturers. Trade or manufacturers’ names may appear herein solely because they are considered essential to the object of the research.

This website, current as of the publication date, is not subject to updating. Recommendations for a full update of content may be submitted to CRP as a new research project.

Project Information

Author Information

TRB Volunteers and Staff

  • Shot of three young people cycling to work together

This guide presents methods for State departments of transportation (DOTs) to reduce greenhouse gas (GHG) emissions from the transportation sector. The purpose of this guide is to

  • Identify and describe tools, methods, and data sources that State DOTs can use to assess GHG emissions, evaluate GHG reduction opportunities, and develop action plans based on current and desired engagement levels.
  • Provide self-assessment rubrics to help State DOTs understand how they can address GHGs through all stages of their activities across a range of functional units, including policy, planning and programming, design, environmental review, construction, maintenance, and operations.
  • Help State DOTs effectively partner with other state, regional, and local agencies; communicate with stakeholders and the public; report and respond to Federal or State GHG-related requirements, if enacted; support local GHG reduction initiatives; or undertake self-directed actions to reduce GHG emissions.