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Final ruleTook effect April 6, 2026

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

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register April 6, 2026. Document 2026-06614. Updated Nov. 13, 2026.

What it does

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.

The National Highway Traffic Safety Administration's summary, as published in the Federal Register.

What changed in the regulation

1 part of Title 49 of the Code of Federal Regulations:

49 CFR 571

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The National Highway Traffic Safety Administration has published 23 final rules in 2026 so far, compared with 10 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

Before this

No earlier Federal Register document under regulation identifier 2127-AM80 since Jan. 1, 2025.

What happens next and when

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.

The agency's dates, word for word.

Document number2026-06614
ActionInterim final rule; request for comments.
AgenciesTransportation Department; National Highway Traffic Safety Administration
PublishedApril 6, 2026
Effective dateApril 6, 2026
Comments closeMay 21, 2026
Regulation identifier (RIN)2127-AM80
DocketNHTSA-2026-0727

Source: the Federal Register (public domain). The document in the Federal Register