# Federal Register 2026-19964 — effective 2026-11-30 — The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks — National Highway Traffic Safety Administration

For Federal Register 2026-19964, effective date is 2026-11-30; agency is National Highway Traffic Safety Administration; published is 2026-09-30; cfr parts amended is 49 CFR 523, 49 CFR 531, 49 CFR 533, 49 CFR 536, 49 CFR 537, 49 CFR 578, recorded from its source on 2026-10-05; source re-checked 2026-11-03.

- **FR document number:** 2026-19964 _(verified: appears in the quote below)_
- **Rule:** The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks _(verified: appears in the quote below)_
- **Agency:** National Highway Traffic Safety Administration _(verified: appears in the quote below)_
- **Effective date:** 2026-11-30 _(verified: appears in the quote below)_
- **DATES, as printed:** This rule is effective November 30, 2026. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of November 30, 2026. _(verified: appears in the quote below)_
- **CFR parts amended:** 49 CFR 523, 49 CFR 531, 49 CFR 533, 49 CFR 536, 49 CFR 537, 49 CFR 578 _(our reading, not quoted from the source)_
- **Published:** 2026-09-30 _(verified: appears in the quote below)_

## What the source says

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## Source

- https://www.federalregister.gov/api/v1/documents.json?per_page=1000&order=oldest&conditions%5Btype%5D%5B%5D=RULE&conditions%5Beffective_date%5D%5Bgte%5D=2026-08-31&conditions%5Beffective_date%5D%5Blte%5D=2026-12-31&fields%5B%5D=document_number&fields%5B%5D=title&fields%5B%5D=agency_names&fields%5B%5D=effective_on&fields%5B%5D=dates&fields%5B%5D=cfr_references&fields%5B%5D=publication_date&fields%5B%5D=html_url

Last verified: 2026-11-03. Review by: 2026-11-16.
Part of [Federal rules taking effect: every US final rule in the Federal Register, by effective date](https://referencesource.org/federal-rules-taking-effect/).