Data / Federal rules / 2024-13957

Federal Motor Vehicle Safety Standards; Rear Impact Guards; Rear Impact Protection

The National Highway Traffic Safety Administration published this final rule in the Federal Register on June 27, 2024.

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What the agency says

This document denies a petition, submitted by Advocates for Highway and Auto Safety, the Truck Safety Coalition, Citizens for Reliable and Safe Highways, and Parents Against Tired Truckers, for reconsideration of a final rule amending Federal Motor Vehicle Safety Standard (FMVSS) No. 223, "Rear impact guards," and FMVSS No. 224, "Rear impact protection." The final rule, published on July 15, 2022, upgraded NHTSA's standards addressing rear underride protection in crashes of passenger vehicles into trailers and semitrailers by requiring rear impact guards to provide sufficient strength and energy absorption to protect occupants of compact and subcompact passenger cars impacting the rear of trailers at 56 kilometers per hour (km/h) (35 miles per hour (mph)).

Key facts

Document number: 2024-13957
Type: Final rule
Action: Response to petition for reconsideration
Agency: Transportation Department; National Highway Traffic Safety Administration
Published: June 27, 2024
Dates: June 28, 2024.
Docket: Docket No. NHTSA-2022-0053
Code of Federal Regulations: 49 CFR 571
Pages: 3

The document on federalregister.gov PDF

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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
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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
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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
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Everything from the National Highway Traffic Safety Administration · Published in June 2024

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.