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State and Local Transportation Resources

Laws & Regulations

Use this page to access rulemakings, regulatory guidance, and related information on air quality and transportation matters.

Specific Transportation Topics

Following is an alphabetical list by topic that includes direct links to environmental regulations relevant to specific types of vehicles, other "mobile" sources of pollution, fuels, pollutants, and related topics.

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General Air Quality & Transportation Topics

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This page is maintained by EPA's Office of Transportation and Air Quality (OTAQ).
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