WTO notification · TBT
United StatesAdopted, according to its latest notice
Official title
Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine Standards
The United States issued an addendum on 7 September 2026 to the earlier TBT notification G/TBT/N/USA/1567. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 22 January 2020. The comment period closed on 16 May 2022.
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Heavy-duty engine pollution
Latest notice (G/TBT/N/USA/1567/Add.4, 7 September 2026)
The latest notice says the measure was adopted or published.
Agency Information Collection Activities; Proposed Information Collection Request; Comment Request; Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards (Renewal)
The Environmental Protection Agency (EPA) is planning to submit an information collection request (ICR), Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards (Renewal) (EPA ICR Number 2621.03, OMB Control Number 2060- 0741) to the Office of Management and Budget (OMB) for review and approval in accordance with the Paperwork Reduction Act. Before doing so, EPA is soliciting public comments on specific aspects of the proposed information collection as described below. This is a proposed extension of the ICR, which is currently approved through 31 May 2027. This notice allows for 60 days for public comments. Comments must be submitted on or before 3 November 2026. 91 Federal Register (FR) 56884, 4 September 2026: This notice is identified by Docket Number EPA-HQ-OAR-2026-6898. The Docket Folder is available from Regulations.gov at and provides access to primary documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point by or before 4pm Eastern Time on 3 November 2026. Comments received by the USA TBT Enquiry Point from WTO Members and their stakeholders will be shared with EPA and submitted to the Docket if received within the comment period. Previous actions notified under the symbol G/TBT/N/USA/1567 are identified by Docket Number EPA-HQ-OAR-2019-0055.
Advanced notice of proposed rulemaking - The Environmental Protection Agency (EPA) is soliciting pre- proposal comments on a rulemaking effort known as the Cleaner Trucks Initiative (CTI). This advance notice describes EPA's plans for a new rulemaking that would establish new emission standards for oxides of nitrogen (NOX) and other pollutants for highway heavy-duty engines. It also describes opportunities to streamline and improve certification procedures to reduce costs for engine manufacturers. The EPA is seeking input on this effort from the public, including all interested stakeholders, to inform the development of a subsequent notice of proposed rulemaking.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/1567/Add.4
Agency Information Collection Activities; Proposed Information Collection Request; Comment Request; Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards (Renewal)
The Environmental Protection Agency (EPA) is planning to submit an information collection request (ICR), Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards (Renewal) (EPA ICR Number 2621.03, OMB Control Number 2060- 0741) to the Office of Management and Budget (OMB) for review and approval in accordance with the Paperwork Reduction Act. Before doing so, EPA is soliciting public comments on specific aspects of the proposed information collection as described below. This is a proposed extension of the ICR, which is currently approved through 31 May 2027. This notice allows for 60 days for public comments. Comments must be submitted on or before 3 November 2026. 91 Federal Register (FR) 56884, 4 September 2026: This notice is identified by Docket Number EPA-HQ-OAR-2026-6898. The Docket Folder is available from Regulations.gov at and provides access to primary documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point by or before 4pm Eastern Time on 3 November 2026. Comments received by the USA TBT Enquiry Point from WTO Members and their stakeholders will be shared with EPA and submitted to the Docket if received within the comment period. Previous actions notified under the symbol G/TBT/N/USA/1567 are identified by Docket Number EPA-HQ-OAR-2019-0055.
CorrigendumG/TBT/N/USA/1567/Add.3/Corr.1
Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine Standards
TITLE: Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards; Correction AGENCY: Environmental Protection Agency (EPA) ACTION: Final rule; correction SUMMARY: EPA is issuing a correction to a final rule published in the Federal Register of Tuesday, 24 January 2023, which will be effective 27 March 2023. The final rule established new emission standards for heavy-duty highway engines, along with several amendments for a wide range of highway and nonroad engines and vehicles. This document corrects two amendatory instructions. These corrections do not include any substantive change to the final rule. DATES: This correction is effective 27 March 2023. This final rule; correction and previous actions notified under the symbol G/TBT/N/USA/1567 are identified by Docket Number EPA-HQ-OAR-2019-0055. The Docket Folder is available from Regulations.gov at and provides access to primary and supporting documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.
AddendumG/TBT/N/USA/1567/Add.3
Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine Standards
TITLE: Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards AGENCY: Environmental Protection Agency (EPA) ACTION: Final rule SUMMARY: The Environmental Protection Agency (EPA) is finalizing a program to further reduce air pollution, including ozone and particulate matter (PM), from heavy-duty engines and vehicles across the United States. The final program includes new emission standards that are significantly more stringent and that cover a wider range of heavy-duty engine operating conditions compared to today's standards; further, the final program requires these more stringent emissions standards to be met for a longer period of when these engines operate on the road. Heavy-duty vehicles and engines are important contributors to concentrations of ozone and particulate matter and their resulting threat to public health, which includes premature death, respiratory illness (including childhood asthma), cardiovascular problems, and other adverse health impacts. The final rulemaking promulgates new numeric standards and changes key provisions of the existing heavy-duty emission control program, including the test procedures, regulatory useful life, emission-related warranty, and other requirements. Together, the provisions in the final rule will further reduce the air quality impacts of heavy-duty engines across a range of operating conditions and over a longer period of the operational life of heavy- duty engines. The requirements in the…
AddendumG/TBT/N/USA/1567/Add.2
Comment deadline: Closed on 16 May 2022
Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine Standards
TITLE: Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards; Extension of Comment Period AGENCY: Environmental Protection Agency (EPA) ACTION: Notice; extension of public comment period SUMMARY: On 28 March 2022, the Environmental Protection Agency (EPA) published a proposed rule titled 'Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards' (notified in G/TBT/N/USA/1567/Add.1). EPA is extending the comment period for this proposed rule, which was scheduled to end on 13 May 2022. The Clean Air Act requires that the record of proceedings allowing oral presentation of data, views, and arguments on a proposed rule be kept open for 30 days after completion of the proceeding to provide an opportunity for submission of rebuttal and supplementary information. Because EPA held a third day of public hearing for this proposed rule, the final 'proceeding allowing oral presentation of data, views, and arguments,' was held on 14 April 2022. For this reason, the public comment period for this proposed rule is extended and will now end on 16 May 2022. DATES: The comment period for the proposed rule published on 28 March 2022, at 87 FR 17414, is extended. Comments must be received on or before 16 May 2022. This notice; extension of public comment period and previous actions notified under the symbol G/TBT/N/USA/1567 are identified by Docket Number EPA-HQ-OAR-2019-0055. The Docket Folder is available from…
AddendumG/TBT/N/USA/1567/Add.1
Comment deadline: Closed on 13 May 2022
Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine Standards
TITLE: Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards AGENCY: Environmental Protection Agency (EPA) ACTION: Proposed rule SUMMARY: The Environmental Protection Agency (EPA) is proposing a rule that would reduce air pollution from highway heavy-duty vehicles and engines, including ozone, particulate matter, and greenhouse gases. This proposal would change the heavy-duty emission control program--including the standards, test procedures, useful life, warranty, and other requirements--to further reduce the air quality impacts of heavy-duty engines across a range of operating conditions and over a longer period of the operational life of heavy-duty engines. Heavy-duty vehicles and engines are important contributors to concentrations of ozone and particulate matter and their resulting threat to public health, which includes premature death, respiratory illness (including childhood asthma), cardiovascular problems, and other adverse health impacts. This proposal would reduce emissions of nitrogen oxides and other pollutants. In addition, this proposal would make targeted updates to the existing Heavy-Duty Greenhouse Gas Emissions Phase 2 program, proposing that further GHG reductions in the MY 2027 timeframe are appropriate considering lead time, costs, and other factors, including market shifts to zero-emission technologies in certain segments of the heavy-duty vehicle sector. We also propose limited amendments to the regulations that…
Regular notificationG/TBT/N/USA/1567
Comment deadline: Closed on 20 February 2020
Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine Standards
Advanced notice of proposed rulemaking - The Environmental Protection Agency (EPA) is soliciting pre- proposal comments on a rulemaking effort known as the Cleaner Trucks Initiative (CTI). This advance notice describes EPA's plans for a new rulemaking that would establish new emission standards for oxides of nitrogen (NOX) and other pollutants for highway heavy-duty engines. It also describes opportunities to streamline and improve certification procedures to reduce costs for engine manufacturers. The EPA is seeking input on this effort from the public, including all interested stakeholders, to inform the development of a subsequent notice of proposed rulemaking.
Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.
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