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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.
- Proposed Rulemaking: Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles (published November 30, 2010)
- Fact Sheet: EPA and NHTSA Propose First-Ever Program to Reduce Greenhouse Gas Emissions and Improve Fuel Efficiency of Medium- and Heavy-Duty Vehicles | PDF Version (5 pp, 572K, EPA-420-F-10-901, October 2010)
- Correction Notice: Preamble and Regulations | PDF Version (6 pp, 154K, published December 29, 2010)
- Preamble and Regulations | PDF Version (305 pp, 9.84MB, published November 30, 2010)
- Draft Regulatory Impact Analysis (RIA) (PDF) (391 pp, 5.11MB, EPA-420-D-10-901, October 2010)
- Notice of Public Hearings (PDF) (2 pp, 53K, published November 1, 2010)
- See the GEM web page to read about the Greenhouse gas Emissions Model (GEM) for determining truck compliance
- Proposed Rulemaking: Model Year 2012-2016 Light-Duty Vehicle Greenhouse Gas Emissions Standards and Corporate Average Fuel Economy Standards (published September 28, 2009)
- Fact Sheet: EPA and NHTSA Propose First-Ever National Program to Reduce Greenhouse Gas Emissions and Improve Fuel Economy For Cars and Trucks | PDF Version (9 pp, 266K, EPA-420-F-09-047a, September 2009)
- Proposed Model Year 2012-2016 Rule (PDF, the entire document) (337 pp, 4.16MB, September 28, 2009)
- Draft Regulatory Impact Analysis (RIA) (PDF) (337 pp, 2.1M, EPA-420-D-09-003, September 2009)
- Draft Joint Technical Support Document (TSD) (PDF) (203 pp, 1.8M, EPA-420-D-09-901, September 2009)
- Detroit Michigan, October 21, 2009: Transcript of hearing (PDF) (145 pp, 228K)
- New York, New York, October 23, 2009: Transcript of hearing (PDF) (178 pp, 362K)
- Los Angeles, California, October 27, 2009: Transcript of hearing (PDF) (208 pp, 407K)
Information on Public Hearings: Federal Register Notice of Public Hearings Page 51252 | PDF Version (1 page, 60K)
Public Hearing transcripts:
- EPA/NHTSA Notice of Intent to Establish Model Year 2012-2016 Joint Standards to Reduce Greenhouse Gas Emissions and Improve Fuel Economy for Cars and Trucks (published May 22, 2009)
In May 2009, EPA and the Department of Transportation issued a Notice of Intent stating that the two agencies would work together to establish national vehicle greenhouse gas and fuel economy standards for new cars and trucks sold in the United States. This joint Notice of Intent followed President Obama’s May 2009 announcement of a national policy that will reduce greenhouse gas emissions and improve fuel economy for all new cars and trucks sold in the United States.
- Fact Sheet: EPA Will Propose Historic Greenhouse Gas Emissions Standards for Light-Duty Vehicles | PDF Version (4 pp, 531K, EPA-420-F-09-028, May 2009)
- Notice of Upcoming Joint Rulemaking to Establish Vehicle GHG Emissions and CAFÉ Standards (PDF) (6 pp, 112K, May 22, 2009)
- The State of California and major automakers showed their support for this effort by sending letters to the agencies in 2009.