Data / Federal rules / 2026-06614

Federal Motor Vehicle Safety Standards; Occupant Crash Protection, Seat Belt Reminder Systems

The National Highway Traffic Safety Administration published this final rule in the Federal Register on April 6, 2026. It took effect on April 6, 2026. Comments closed on May 21, 2026.

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What the agency says

This interim final rule amends the seat belt warning requirements in Federal Motor Vehicle Safety Standard (FMVSS) No. 208, "Occupant crash protection" in response to petitions for reconsideration of the January 2025 final rule. This interim final rule delays the compliance dates and makes technical clarifications to the regulatory text. NHTSA denies the remainder of the requests. Though these amendments are effective immediately, to benefit from comments interested parties and the public may have, NHTSA requests that any comments be submitted to the docket for this rule. Following the close of the comment period, NHTSA will publish a final rule responding to any comments received and making any appropriate changes to the interim final rule.

Key facts

Document number: 2026-06614
Type: Final rule
Action: Interim final rule; request for comments
Agency: Transportation Department; National Highway Traffic Safety Administration
Published: April 6, 2026
Takes effect: April 6, 2026
Comments due: May 21, 2026
Dates: This interim final rule is effective April 6, 2026. Comments concerning this document are due no later than May 21, 2026. The compliance date of this interim final rule is September 1, 2028, with optional early compliance permitted. Multi-stage manufacturers and alterers have an additional year to comply.
Docket: Docket No. NHTSA-2026-0727
Regulation ID (RIN): 2127-AM80
Code of Federal Regulations: 49 CFR 571
Topics: Imports; Motor vehicle safety; Motor vehicles
Pages: 16

The document on federalregister.gov PDF

Other documents from the National Highway Traffic Safety Administration

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Part 572; Anthropomorphic Test Devices; Test Device for Human Occupant Restraint 50th Percentile Adult Male Dummy (THOR-50M); Extension of Comment Period 2026-21730	Proposed rule	Oct 23
Eliminating Obsolete Regulations Related to the 911 Grant Program 2026-20493	Final rule	Oct 6
The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks 2026-19964 · significant	Final rule	Sep 30
Amendment to the Uniform Procedures for State Highway Safety Grant Programs 2026-19403	Final rule	Sep 23
Part 572; Anthropomorphic Test Devices; Test Device for Human Occupant Restraint 50th Percentile Adult Male Dummy (THOR-50M) 2026-19370	Proposed rule	Sep 22
Federal Motor Vehicle Safety Standards; Denial of a Petition for Rulemaking 2026-19242	Proposed rule	Sep 21
Federal Motor Vehicle Safety Standard No. 213a; Child Restraint Systems-Side Impact Protection; Federal Motor Vehicle Safety Standard No. 213; Child Restraint Systems, Federal Motor Vehicle Safety Standard No. 213b; Child Restraint Systems; Incorporation by Reference 2026-18380	Final rule	Sep 9
Resetting NHTSA's Fuel Economy Program: Commercial Medium- and Heavy-Duty On-Highway Vehicles and Work Trucks 2026-17756	Final rule	Aug 31

Everything from the National Highway Traffic Safety Administration · Rules on imports · Rules on motor vehicle safety · Rules on motor vehicles · Published in April 2026

Read from the Federal Register API, last updated 2026-10-23. 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.