Final Rule for Phase 1 Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles
Rule Summary
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.
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- 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)
Rule History
Additional Resources
- 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)