US Environmental Protection Agency
5 Feb 2025 Automotive Life Cycle Assessment Literature Review (ERG and US EPA) A-LCA-20-08 2025-02-05 ERG US EPA
17 Mar A-LCA: Assessment of the State-of-Play (US EPA) A-LCA-36-03 2026-03-17 US EPA
16 Mar A-LCA: Comments on proposal for a new Mutual Resolution No. 5 (M.R.5) (US EPA and USA) A-LCA-38-05 2026-03-16 US EPA USA
12 May 2025 Comments on the consolidated A-LCA draft resolution (US EPA) A-LCA-SG3-23-03 2025-05-12 US EPA
12 Nov 2025 A-LCA: Comments on provisions related to traction batteries (US EPA) A-LCA-SG4-32-03 2025-11-12 US EPA
14 Nov 2024 Recommendations for Electric Power Sector LCI (US EPA) A-LCA-SG6-21-07 2024-11-14 US EPA
14 Nov 2024 Tracking Fugitive Hydrogen Emissions and Hydrogen GWP (US EPA) A-LCA-SG6-22-02 2024-11-14 US EPA
4 Mar 2021 Deterioration factor for L-vehicle pollution control device durability (US EPA) DUR-13-02/Rev.1 2021-03-04 US EPA
23 Apr 2021 Proposal: Minimum Accumulated Distance for 3-Wheeled Vehicles (US EPA) DUR-14-02 2021-04-23 US EPA
27 Apr 2021 L-vehicle pollution control: Statistical analysis of deterioration factor data (US EPA) DUR-14-06 2021-04-27 US EPA
30 Jun 2021 Input on deterioration factor methodologies in US emissions regulations (US EPA) DUR-16-03 2021-06-30 US EPA
30 Jun 2021 Deterioration factors across regulatory agencies: Revision of column on US methods (US EPA) DUR-16-04 2021-06-30 US EPA
30 Jun 2021 Deterioration factors across regulatory agencies: Revision of US column (US EPA) DUR-16-05 2021-06-30 US EPA
21 Jul 2021 Deterioration Factor Requirements for On-Highway Motorcycles (two and three wheelers) (US EPA) DUR-17-04 2021-07-21 US EPA
21 Jul 2021 L-vehicle Pollution Control Durability: Minimum Distance Accumulation and Mathematical Deterioration Factor (US EPA) DUR-17-05 2021-07-21 US EPA
23 Aug 2021 L-category pollution controls durability GTR: Proposal to include paragraphs on multiplicative deterioration factor values in the Technical Report (US EPA) DUR-18-01 2021-08-23 US EPA
8 Dec 2015 Request to include US and Canadian reference fuels in motorcycle evaporative emissions GTR (US EPA and ECCC) EPPR-14-03 2015-12-08 The current draft GTR on motorcycle evaporative emissions includes seven options for the test fuel; however, the list does not include the fuel specified under US and Canadian requirements. Therefore, the US and Canada request the addition of a new option corresponding to the fuel specifications laid out in the United States Code of Federal Regulations, Title 40, Part 1051, section 501 (40 CFR 1051.501). US EPA ECCC
15 Oct 2020 Differences between driver mass settings under GTR 2 and Euro5 (US EPA) EPPR-39-04/Rev.2 2020-10-15 US EPA
23 Apr 2021 Statistical analysis of motorcycle emissions deterioration factor data (CARB and US EPA) EPPR-44-06 2021-04-23 CARB US EPA
15 Dec 2022 Motorcycle Emissions Deterioration Factor Statistical Analysis (CARB and US EPA) EPPR-56-04 2022-12-15 CARB US EPA
10 Jan 2025 Assigned Deterioration Factor Analyses from US EPA Motorcycle Certification Information (US EPA) EPPR-65-05 2025-01-10 US EPA
12 Sep 2012 Proposed agenda for the 2nd EVE informal group meeting (US EPA) EVE-02-01 2012-09-12 US EPA
12 Sep 2012 Invitation to the 2nd EVE informal group session (US EPA) EVE-02-02 2012-09-12 US EPA
12 Sep 2012 Hotels in Baltimore (Site of 2nd EVE informal group session) (US EPA) EVE-02-03 2012-09-12 US EPA
12 Sep 2012 Terms of Reference for Informal Working Group on Electric Vehicles and Environment (US EPA) EVE-02-04 2012-09-12 US EPA
12 Sep 2012 Revised and expanded draft agenda for the 2nd EVE informal group session (US EPA) EVE-02-05 2012-09-12 US EPA
19 Sep 2012 Li-Ion Batteries and Nanotechnology for Electric Vehicles: A Life-Cycle Assessment (US EPA and Abt) EVE-02-14 2012-09-19 Presentation on US EPA study evaluating Li-ion batteries for electric vehicles and single-wall carbon nanotube (SWCNT) anode technology for use in next-generation Li-ion batteries. US EPA Abt
19 Sep 2012 Overview of Electric Vehicle Market Issues in the U.S. (US EPA) EVE-02-19 2012-09-19 Current status of plug-in electric vehicles and plug-in hybrid electric vehicles in the U.S. market, U.S. regulatory landscape, U.S. government incentives, market drivers and barriers. US EPA
21 Sep 2012 Draft agenda for the 3rd EVE informal group session (US EPA) EVE-02-21 2012-09-21 Proposed agenda for the Electric Vehicle Environmental Performance informal group session planned for 14 January 2013. US EPA
21 Sep 2012 EVE IWG Session 2 Open Issues (US EPA) EVE-02-22 2012-09-21 Research topics and open discussion items from the second Electric Vehicle Environmental Performance informal working group. US EPA
14 Apr 2013 Summary of the 13th HDH informal group session (US EPA) EVE-05-08 2013-04-14 Review of the Heavy-Duty Hybrids informal group efforts to develop emissions and energy consumption test procedures. US EPA
14 Apr 2013 US Response to EVE Regulatory Reference Guide Questionnaire (US EPA) EVE-05-12 2013-04-14 US input on the draft reference guide on electric vehicle environmental requirements, including review of US electric vehicle regulatory and policy activities (labeling, incentives, consumer awareness, SAE cooperation, etc.). US EPA
17 Feb 2014 Calculation of Upstream CO2 for Electrified Vehicles (US EPA) EVE-09-04 2014-02-17 Presentation on scenarios for deployment of electrified vehicles in the United States and impact on power consumption and CO<sub>2</sub> emissions. US EPA
22 Mar 2016 Battery Durability in Electrified Vehicle Applications: A Review of Degradation Mechanisms and Durability Testing - FINAL REPORT (FEV and US EPA) EVE-18-04 2016-03-22 Under the auspices of the US EPA, FEV North America, Inc. conducted an extensive literature review on the subject of EV battery durability for the EVE Informal Working Group. The review examines the electrochemical basis for the deterioration of batteries used in BEV, HEV, and PHEV applications along with testing activities performed on such electrified vehicles and automotive grade cells, battery packs, etc. FEV US EPA
16 Oct 2018 Hybrid electric vehicle power determination: Status of US EPA validation testing (US EPA) EVE-28-07 2018-10-16 US EPA
4 Apr 2019 EV Power Determination: Development and Validation of a Test Procedure for Determining the System Power (ECCC, JRC, and US EPA) EVE-30-10 2019-04-04 ECCC JRC US EPA
8 Oct 2020 U.S. EPA comments on draft GTR text for in-vehicle battery durability (US EPA) EVE-38-10 2020-10-08 US EPA
16 Dec 2020 Development of a GTR on In-vehicle battery durability (EC, ECCC, and US EPA) EVE-41-03 2020-12-16 EC ECCC US EPA
22 Apr 2021 Comments on the draft EV battery durability GTR (US EPA) EVE-46-12 2021-04-22 US EPA
27 May 2022 Review of CARB ACC II battery durability and warranty proposal (US EPA) EVE-56-06 2022-05-27 US EPA
26 Apr 2023 EPA’s Light/Medium-Duty Vehicle Multipollutant Standards for 2027 and Later: Proposed Rulemaking (US EPA) EVE-61-03 2023-04-26 US EPA
25 Apr 2023 GTR 22: Integration into EPA light- and medium-duty multipollutant proposal (US EPA) EVE-61-07 2023-04-25 US EPA
26 Apr 2023 US Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles – Phase 3 (US EPA) EVE-61-17 2023-04-26 US EPA
19 May 2025 Battery Durability provisions in California ACC II (CARB and US EPA) EVE-85-07 2025-05-19 CARB US EPA
20 May 2025 Overview of EPA’s Test Procedure for Determining Powertrain Rated Power and Reference Vehicle Speeds (US EPA) EVE-85-11 2025-05-20 US EPA
20 May 2025 Heavy-Duty BEV Usable Energy Analysis (US EPA) EVE-85-12 2025-05-20 US EPA
21 Dec 2011 U.S. Environmental Protection Agency Vehicle Compliance Programs (US EPA) EWG-00-03 2011-12-21 US EPA
15 Oct 2015 US Environmental Protection Agency Office of Transportation and Air Quality: Compliance Overview (US EPA) EWG-03-02 2015-10-15 Presentation on the scope and content of US EPA activities with regard to vehicle emissions (including heavy-duty, non-road, and light vehicles). US EPA
24 Dec 2012 New EPA Policies for Vehicle/Engine Conversions to Clean Alternative Fuels (US EPA, CFC, and NGV) GFV-23-12 2012-12-24 US EPA presentation at the Clean Cities Summit held in Indianapolis on June 28, 2011, transmitted to GFV courtesy of Jeff Seisler representing NGV Global and Clean Fuels Consulting. US EPA CFC NGV
2 Sep 2009 Quieter Cars and the Safety of Blind Pedestrians (NHTSA, US EPA, and SAE) GRB-50-09 2009-09-02 NHTSA US EPA SAE
14 Jan 2013 Final ToR for Informal Working Group on Electric Vehicles and Environment (US EPA) GRPE-65-04/Rev.1 2013-01-14 Final Terms of Reference for the informal working group on the environmental performance of electric vehicles. US EPA
14 Jan 2015 Comparison of Heavy Duty Hybrid Test Procedures Drafted in GTR No. 4 (USA and US EPA) GRPE-70-15 2015-01-14 Status of US EPA program to validate the HILS methodology and resolve error codes. USA US EPA
20 Jan 2020 EPA Update on the Cleaner Trucks Initiative (US EPA) GRPE-80-33 2020-01-20 US EPA
4 Jun 2021 IWG RDE (Real Driving Emissions) : Phase 2 Terms of Reference and Rules of Procedure (EU and US EPA) GRPE-83-31 2021-06-04 EU US EPA
31 May 2022 Heavy-Duty Engine and Vehicle Standards: Control of Air Pollution from New Motor Vehicles (US EPA) GRPE-86-33 2022-05-31 US EPA
1 Jun 2022 Life Cycle Analysis: US EPA position (US EPA) GRPE-86-38 2022-06-01 US EPA
14 Oct 2024 USEPA Light/Medium-Duty Vehicle Multipollutant Rulemaking (US EPA) GRPE-91-27 2024-10-14 US EPA
14 Oct 2024 GTR 11: Updating Test Procedures for Nonroad Mobile Machinery (US EPA) GRPE-91-28 2024-10-14 US EPA
14 Oct 2025 A-LCA: Statement from the US EPA on activities (US EPA) GRPE-93-23 2025-10-14 US EPA
4 Jun 2010 Comments on the Terms of Reference (US EPA and USA) HDH-02-06 2010-06-04 US EPA USA
8 Feb 2011 Invitation to the 5th HDH Informal Group session (US EPA) HDH-05-01 2011-02-08 US EPA
25 May 2011 Heavy-duty hybrid powertrain testing (US EPA) HDH-05-10 2011-05-25 US EPA
5 Dec 2011 EPA Heavy‐Duty GHG Overview and Hybrid System Testing (US EPA) HDH-07-09 2011-12-05 US EPA
5 Dec 2011 Clean Automotive Technology: HHV Component Information (US EPA) HDH-07-11 2011-12-05 US EPA
12 Oct 2012 Heavy Duty Hybrid Powertrain Testing (ECCC and US EPA) HDH-11-08 2012-10-12 Presentation on Environment Canada and US EPA joint program. ECCC US EPA
29 Jul 2013 Future Heavy-Duty GHG Test Procedure Considerations (US EPA) HDH-13-12 2013-07-29 Overview of current US Environmental Protection Agency heavy-duty hybrid powerpack testing activites. US EPA
9 Jun 2013 EPA presentation on issues concerning the validation of heavy-duty hybrid HILS procedures (US EPA) HDH-14-06 2013-06-09 US EPA
4 Jan 2014 Adoption of GRPE Heavy-Duty Hybrid new annex to Global Technical Regulation n°4 (US EPA) HDH-16-03 2014-01-04 Memorandum from the US Environmental Protection Agency on the proposed addition of test procedures for heavy-duty hybrid vehicles to the global technical regulation on heavy-duty vehicle emissions and fuel consumption (WHDC) identifying "a number of open issues that are causing concern for the United States and require resolution prior to considering the Annex for adoption". US EPA
4 Jun 2014 US Adoption of GRPE Heavy-Duty Hybrid new annex to Global Technical Regulation n°4 (US EPA) HDH-18-04 2014-06-04 Memorandum from the US EPA providing an overview of obstacles to US adoption of the proposed heavy-duty hybrids amendment and possible remedies to overcome these concerns. This memo addresses remaining concerns beyond those presented earlier in document HDH-16-03. US EPA
19 Dec 2018 RDE GTR: Scope of U.S. Work to Inform Development of GTR (US EPA) RDE-02-10 2018-12-19 US EPA
4 Apr 2019 RDE GTR: Scope of U.S. Work to Inform Development of GTR (US EPA) RDE-04-10 2019-04-04 US EPA
5 Nov 2019 RDE Analysis and Open Source Tool Development (US EPA) RDE-07-14 2019-11-05 US EPA
5 Nov 2019 RDE GTR Development (US EPA) RDE-07-15 2019-11-05 US EPA
5 Dec 2018 US EPA report on its EV power determination validation testing results (US EPA) 2018-12-05 US EPA
15 Mar 2010 Draft WLTP test procedures (US EPA) WLTP-DTP-01-02 2010-03-15 US EPA
14 Apr 2010 Presentation: WLTP Test Procedures for Hybrid Electric Vehicle Testing (USA and US EPA) WLTP-DTP-01-12 2010-04-14 USA US EPA
14 Apr 2010 Presentation: WLTP Test Procedures for Chassis Dynamometer Testing (USA and US EPA) WLTP-DTP-01-13 2010-04-14 USA US EPA
22 Sep 2010 40 CFR 1065 N20 measurement devices (USA and US EPA) WLTP-DTP-AP-02-11 2010-09-22 USA US EPA
9 Jun 2010 Final Rulemaking to Establish 2012- 2016 Light-Duty Vehicle CAFE and GHG Standards (NHTSA, US EPA, and USA) 2010-06-09 NHTSA US EPA USA
3 Nov 2011 US EPA/NHTSA programs for greenhouse gas emissions and fuel efficiency standards for medium- and heavy-duty engines (USA, US EPA, and NHTSA) WP.29-155-11 2011-11-03 USA US EPA NHTSA
3 Nov 2011 US EPA/NHTSA program for new fuel economy and environment labels for a new generation of vehicles (USA, US EPA, and NHTSA) WP.29-155-12 2011-11-03 USA US EPA NHTSA
16 Nov 2011 Proposal to establish work groups on electric vehicle safety and environmental requirements (EC, NHTSA, US EPA, and MLIT) WP.29-155-38 2011-11-16 EC NHTSA US EPA MLIT
17 Nov 2015 Statement on US EPA Notices of Violation issued to Volkswagen (US EPA) WP.29-167-31 2015-11-17 US EPA
9 Mar 2016 Statement of Edward Nam, Director Air Quality and Modeling Center Office of Transportation and Air Quality U.S. Environmental Protection Agency (US EPA) WP.29-168-17 2016-03-09 US EPA
1 May 2012 US Federal Register Notice: GHG Emissions Standards and Fuel Efficiency Standards (NHTSA and US EPA) WP.29/2012/32/Add.1 2012-05-01 September 2011 notice of final NHTSA fuel consumption standards and final EPA carbon dioxide (CO2) emissions standards for Combination Tractors; Heavy-duty Pickup Trucks and Vans; and Vocational Vehicles, corresponding with the request to list these regulations in the Compendium of Candidate GTR. NHTSA US EPA
1 May 2012 US Federal Register Notice: Motor Vehicle Fuel Economy Label (NHTSA and US EPA) WP.29/2012/33/Add.1 2012-05-01 July 2011 notice of the US EPA and NHTSA joint final rule establishing new requirements for the fuel economy and environment label posted on the window sticker of all new automobiles sold in the U.S., corresponding with the US request to list this rule in the Compendium of Candidate GTR. NHTSA US EPA