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The transportation sector is the source of 29 percent of U.S. greenhouse gas (GHG) emissions. National commitments to reduce emissions 26-28 percent by 2025 and 80 percent or more by 2050, necessitate less energy use and a transition to alternative energy. FHWA is working with States and metropolitan areas to:
Overview of FHWA work: Toward Low Carbon Transportation (PDF 2 MB)
NEPA Guidance: FHWA Transmittal of CEQ Guidance on Consideration of Greenhouse Gas Emissions and the Effects of Climate Change in National Environmental Policy Act Reviews (August 2016)
Background: Transportation and GHGs
Transportation Planning
Research and Analysis Tools
