Many state departments of transportation (DOTs) are working to incorporate the treatment of greenhouse gas (GHG) emissions, climate change effects, or both in project planning and environmental reviews. There is a wide range of experience, with some states working hard to integrate all of their activities (including environmental review) into a unified, agency-wide treatment of climate change while others are just beginning their efforts.
NCHRP Web-Only Document 400: Considering Greenhouse Gas Emissions and Climate Change in Environmental Reviews: Conduct of Research Report supplements the resources and guidance for state DOTs on addressing climate change effects and GHG emissions provided by NCHRP WebResource 3: GHG Emissions and Climate Change in Environmental Reviews.
Supplemental to NCHRP Web-Only Document 400 is a fact sheet that summarizes the essential findings of the project and provides an overview of the WebResource, as well as an implementation memo that identifies implementation pathways for the project.
National Academies of Sciences, Engineering, and Medicine. 2024. Considering Greenhouse Gas Emissions and Climate Change in Environmental Reviews: Conduct of Research Report. Washington, DC: The National Academies Press. https://doi.org/10.17226/27888.
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