Final Rule for Phase 1 Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles
EPA and NHTSA, on behalf of the Department of Transportation, are each finalizing rules to establish a comprehensive Heavy-Duty National Program that will reduce greenhouse gas emissions and fuel consumption for heavy-duty highway vehicles. NHTSA’s final fuel consumption standards and EPA’s final carbon dioxide (CO2) emissions standards are tailored to each of three regulatory categories of heavy-duty vehicles: Combination Tractors; Heavy-duty Pickup Trucks and Vans; and Vocational Vehicles. These Phase 1 rules include separate standards for the engines that power combination tractors and vocational vehicles.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Final Rule (PDF)(409 pp, 4.89 MB, September 15, 2011)
- Regulatory Impact Analysis (PDF)(553 pp, 9.12 MB, EPA-420-R-11-901, August 2011)
- Response to Comments (PDF)(1,117 pp, 4.82 MB, EPA-420-R-11-004, August 2011)
- Fact Sheet: EPA and NHTSA Adopt First-Ever Program to Reduce Greenhouse Gas Emissions and Improve Fuel Efficiency of Medium- and Heavy-Duty Vehicles (PDF)(8 pp, 661 K, EPA-420-F-11-031, August 2011)
- Fact Sheet: Paving the Way Toward Cleaner, More Efficient Trucks (PDF)(3 pp, 141 K, EPA-420-F-11-032, August 2011)
- Heavy-Duty Vehicle Greenhouse Gas (HDGHG) Emissions Inventory for Air Quality Modeling Technical Support Document (PDF)(51 pp, 477 K, EPA-420-R-11-008, August 2011)