Transportation and Climate
Regulations & Standards: Heavy-Duty
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The complementary EPA and NHTSA standards that make up the Heavy-Duty National Program apply to combination tractors (semi trucks), heavy-duty pickup trucks and vans, and vocational vehicles (including buses and refuse or utility trucks). Together, these standards will cut greenhouse gas emissions and domestic oil use significantly. This program responds to President Obama’s 2010 request to jointly establish greenhouse gas emissions and fuel efficiency standards for the medium- and heavy-duty highway vehicle sector.
- HD GHG Implementation Workshop – On November 3, 2011, EPA conducted a workshop on the certification process for medium- and heavy-duty engines and vehicles to comply with greenhouse gas emissions standards and fuel efficiency standards. Below are presentations from the workshop. Further details are provided in the guidance letter issued October 6, 2011.
- Requirements for Vehicle Manufacturers
- Certification Information for Vocational Vehicle Manufacturers (PDF) (57pp, 560k, August 2012)
- Implementation Workshop Questions and Answers
- Implementation Work Shop Questions and Answers, Fifth Edition (PDF) (33 pp, 501k, EPA-420-F-12-004c, June 2012)
- Workshop Presentations
- Overview of Greenhouse Gas Emission Requirements for Heavy-Duty Engines and Vehicles (PDF) (13 pp, 165k, November 3, 2011)
- Greenhouse Gas Emission Requirements for Heavy-Duty Pickup Trucks and Vans (PDF) (35 pp, 369k, November 3, 2011)
- Greenhouse Gas Emission Requirements for Heavy-Duty Engines (PDF) (47 pp, 252k, November 3, 2011)
- Greenhouse Gas Emission Requirements for Combination Tractors and Vocational Vehicles (PDF) (72 pp, 483k, November 3, 2011)
- National Highway Traffic Safety Administration (PDF) (1 pp, 36k, November 3, 2011)
- Final Rulemaking: Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles (signed August 9, 2011)
- Fact Sheet: EPA and NHTSA Adopt First-Ever Program to Reduce Greenhouse Gas Emissions and Improve Fuel Efficiency of Medium- and Heavy-Duty Engines and Vehicles (PDF) (8 pp, 661K, EPA-420-F-11-031, August 2011)
- Fact Sheet: Paving the Way Toward Cleaner, More Efficient Trucks (PDF) (3 pp, 141K, EPA-420-F-11-032, August 2011)
- Final Rule (PDF) (408 pp, 4.78MB, published September 15, 2011)
- Final Regulatory Impact Analysis (RIA) (PDF) (553 pp, 9.12MB, EPA-420-R-11-901, August 2011)
- Heavy-Duty Vehicle Greenhouse Gas Emissions Inventory for Air Quality Modeling Technical Support Document (PDF) (51 pp, 477K, EPA-420-R-11-008, August 2011)
- Air Quality Modeling Technical Support Document: Heavy-Duty Vehicle Greenhouse Gas Emission Standards Final Rule (PDF) (148 pp, 5.58MB, EPA-454-R-11-004, August 2011)
- Response to Comments (PDF) (1,117 pp, 4.82MB, EPA-420-R-11-004, August 2011)
- Greenhouse gas Emissions Model (GEM) for determining truck compliance
- See the GEM web page to learn about the model architecture and how to use the model.
- See Previously Proposed Emission Standards to read the regulatory support documents for the proposed heavy-duty rulemaking.