Proposed Rule and Related Materials for Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles - Phase 2

Rule Summary

The U.S. Environmental Protection Agency (EPA) and the Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) jointly proposed a national program to establish the next phase of greenhouse gas (GHG) emissions and fuel efficiency standards for medium- and heavy-duty vehicles. This “Phase 2 program” would significantly reduce carbon emissions and improve the fuel efficiency of heavy-duty vehicles, helping to address the challenges of global climate change and energy security.

• Proposed Rule (pdf) (5.1 MB, published July 13, 2015)

Related Materials

Fact Sheets

• Cutting Carbon Pollution, Improving Fuel Efficiency, Saving Money, and Supporting Innovation for Trucks (pdf) (129 KB, EPA-420-F-15-900, June 2015)
• EPA and NHTSA Propose Standards to Reduce Greenhouse Gas Emissions and Improve Fuel Efficiency of Medium- and Heavy-Duty Vehicles for Model Year 2018 and Beyond (pdf) (139 KB, EPA-420-F-15-901, June 2015)
• EPA and NHTSA Propose Greenhouse Gas and Fuel Efficiency Standards for Medium- and Heavy-Duty Trucks: By the Numbers (pdf) (514 KB, EPA-420-F-15-903, June 2015)

Frequently Asked Questions

• Proposed EPA and NHTSA Regulation of Commercial Trailers Used with Combination Tractors (pdf) (507 KB, EPA-420-F-15-902, June 2015)
• Frequently Asked Questions about Heavy-Duty “Glider Vehicles” and “Glider Kits” (pdf) (580 KB, EPA-420-F-15-904, July 2015)

Other

• Draft Regulatory Impact Analysis (pdf) (8.5 MB, EPA-420-D-15-900, June 2015)
• Notice of Data Availability (pdf) (225 KB, published March 2, 2016)