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State and Local Transportation Resources

Policy and Technical Guidance

Transportation
Conformity

NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.

This page contains policy guidance issued by EPA and/or the U.S. Department of Transportation to assist state and local transportation and air quality agencies implement the transportation conformity program. Policy guidance can be found on the following topics:

Transportation Planning and Conformity Requirements

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Project-Level Conformity

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Emission Models and Conformity

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