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Transportation and Climate

Previously Proposed Emission Standards

This page includes a collection of previously proposed standards for greenhouse gas (GHG) emissions from mobile sources. For current regulations for controlling GHG emissions from new motor vehicles and their engines, see our Regulations and Standards page.

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.

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