Data / Federal rules / 2024-06809
Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles-Phase 3
The Environmental Protection Agency published this final rule in the Federal Register on April 22, 2024. It took effect on June 21, 2024.
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What the agency says
The Environmental Protection Agency (EPA) is promulgating new greenhouse gas (GHG) emissions standards for model year (MY) 2032 and later heavy-duty highway vehicles that phase in starting as early MY 2027 for certain vehicle categories. The phase in revises certain MY 2027 GHG standards that were established previously under EPA's Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles--Phase 2 rule ("HD GHG Phase 2"). This document also updates discrete elements of the Averaging Banking and Trading program, including providing additional flexibilities for manufacturers to support the implementation of the Phase 3 program balanced by limiting the availability of certain advanced technology credits initially established under the HD GHG Phase 2 rule. EPA is also adding warranty requirements for batteries and other components of zero-emission vehicles and requiring customer-facing battery state-of- health monitors for plug-in hybrid and battery electric vehicles. In this action, we are also finalizing additional revisions, including clarifying and editorial amendments to certain highway heavy-duty vehicle provisions and certain test procedures for heavy-duty engines.
Key facts
- Document number
- 2024-06809
- Type
- Final rule
- Action
- Final rule
- Agency
- Environmental Protection Agency
- Published
- April 22, 2024
- Takes effect
- June 21, 2024
- Dates
- This final rule is effective on June 21, 2024. The incorporation by reference of certain material listed in this rule is approved by the Director of the Federal Register beginning June 21, 2024. The incorporation by reference of certain other material listed in this rule was previously approved by the Director of the Federal Register as of March 27, 2023.
- Docket
- EPA-HQ-OAR-2022-0985; FRL-8952-02-OAR
- Regulation ID (RIN)
- 2060-AV50
- Code of Federal Regulations
- 40 CFR 86; 40 CFR 1036; 40 CFR 1037; 40 CFR 1039; 40 CFR 1054; 40 CFR 1065
- Topics
- Administrative practice and procedure; Air pollution control; Confidential business information; Environmental protection; Greenhouse gases; Imports; Incorporation by reference; Labeling; Motor vehicle pollution; Penalties; Reporting and recordkeeping requirements; Research; Warranties
- Pages
- 392
Other documents from the Environmental Protection Agency
Everything from the Environmental Protection Agency · Rules on administrative practice and procedure · Rules on air pollution control · Rules on confidential business information · Published in April 2024
Read from the Federal Register API, last updated 2026-10-24. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.