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Proposed Rulemaking: Phase 2 Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles
The U.S. Environmental Protection Agency (EPA) and the Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) are jointly proposing a national program that would 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.
- Overview Fact Sheet: Cutting Carbon Pollution, Improving Fuel Efficiency, Saving Money, and Supporting Innovation for Trucks (PDF) (3 pp, 127K, EPA-420-F-15-900, June 2015)
- Detailed Fact Sheet: 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) (6 pp, 545K, EPA-420-F-15-901, June 2015)
- Fact Sheet on Trailers: Proposed EPA and NHTSA Regulation of Commercial Trailers Used with Combination Tractors: Frequently Asked Questions(PDF) (4 pp, 529K, EPA-420-F-15-902, June 2015)
- Key Numbers Fact Sheet: EPA and NHTSA Propose Greenhouse Gas and Fuel Efficiency Standards for Medium- and Heavy-Duty Trucks: By the Numbers (PDF) (3 pp, 537K, EPA-420-F-15-903, June 2015)
- Proposed Rule (PDF) (629 pp, 5.2MB, published July 13, 2015)
- Redline/Strikeout of EPA Proposed Regulatory Text Relative to Current CFR (PDF) (378 pp, 3.8MB, pre-publication, signed June 19, 2015)
- Draft Regulatory Impact Analysis (RIA) (PDF) (971 pp, 9.8MB, EPA-420-D-15-900, June 2015)
- See the GEM web page to read about the Greenhouse gas Emissions Model (GEM) for determining truck compliance
- Glider Kits: Frequently Asked Questions about Heavy-Duty “Glider Vehicles” and “Glider Kits” (PDF) (5 pp, 608K, EPA-420-F-15-904, July 2015)
Comment Period Extended
EPA and NHTSA have extended the comment period to October 1, 2015.
- Notice: Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles - Phase 2; Extension of Comment Period (PDF) (2 pp, 220.3 K, published September 8, 2015)
Information on Public Hearings:
EPA and NHTSA jointly held a public hearing in Chicago, IL on Thursday, August 6, 2015, and a second hearing in Long Beach, CA on Tuesday, August 18, 2015.
- Chicago Public Hearing Announcement: Announcement of Public Hearings (PDF) (2 pp, 215K, published July 28, 2015)
- Long Beach Public Hearing Announcement: Announcement of Public Hearings (PDF) (2 pp, 192K, published August 3, 2015)
Extending the Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles
EPA and NHTSA, in collaboration with the California ARB, plan to extend the Heavy-Duty National Program beyond model year 2018, to further reduce fuel consumption through the application of advanced cost-effective technologies and continue efforts to improve the efficiency of moving goods across the United States.
- Technical Research Workshop supporting EPA and NHTSA Phase 2 Standards for MD/HD Greenhouse Gas and Fuel Efficiency — December 10 and 11, 2014
EPA and NHTSA sponsored a technical workshop December 10 and 11, 2014, at Southwest Research Institute (SwRI) in San Antonio, Texas. The presentations (ZIP) (42MB) are available for download.
- Read the 2014 Presidential Announcement
- Fact Sheet: Continuing the Path to Cleaner, More Efficient Trucks
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 and Fuel Consumption Technical Amendments – EPA and NHTSA are adopting corrections to provisions in the Agencies’ respective rules addressing greenhouse gas emissions standards and fuel efficiency standards for medium- and heavy-duty engines and vehicles. These amendments correct inconsistencies and add clarifications in the current regulatory text for both agencies while also eliminating duplicative reporting requirements and reduce inadvertent minor differences between the EPA and NHTSA programs.
- Partial withdrawal of direct final rule (PDF) (5 pp, 296K, published August 16, 2013)
- Fact sheet: EPA Issues Amendments to the Heavy-Duty Highway Greenhouse Gas Rule and Other Nonroad Provisions (PDF) (3 pp, 534K, EPA-420-F-13-001, May 2013)
- Notice of Proposed Rulemaking (PDF) (14 pp, 266K, published June 17, 2013)
- Direct Final Rule (PDF) (38 pp, 652K, published June 17, 2013)
- Greenhouse gas Emissions Model (GEM) for determining truck compliance
- See the GEM page for the new version of the model and to learn about the model architecture and how to use the model.
- 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 (published September 15, 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.