Data / Federal rules / 2026-21730

Part 572; Anthropomorphic Test Devices; Test Device for Human Occupant Restraint 50th Percentile Adult Male Dummy (THOR-50M); Extension of Comment Period

The National Highway Traffic Safety Administration published this proposed rule in the Federal Register on October 23, 2026. Comments are due by November 21, 2026.

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What the agency says

In response to a request from the Alliance for Automotive Innovation (Auto Innovators), NHTSA is announcing a 30-day extension of the public comment period for the Supplemental Notice of Proposed Rulemaking (SNPRM) published on September 22, 2026. The SNPRM supplements NHTSA's September 2023 notice of proposed rulemaking to amend NHTSA's regulations to include an advanced crash test dummy (the Test Device for Human Occupant Restraint (THOR) 50th percentile adult male) by requesting comment on specifying an additional spine configuration and an alternative to the face foam, and announcing the availability of additional documents. The comment period for the SNPRM was originally scheduled to end on October 22, 2026. It will now end on November 21, 2026.

Key facts

Document number: 2026-21730
Type: Proposed rule
Action: Extension of comment period
Agency: Transportation Department; National Highway Traffic Safety Administration
Published: October 23, 2026
Comments due: November 21, 2026
Dates: The comment period for the SNPRM published on September 22, 2026 at 91 FR 60068 is extended to November 21, 2026.
Docket: Docket No. NHTSA-2023-0031
Regulation ID (RIN): 2127-AM20
Code of Federal Regulations: 49 CFR 572
Pages: 2

The document on federalregister.gov PDF Comment on regulations.gov

Other documents from the National Highway Traffic Safety Administration

Document	Type	Published
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
Temporary Exemption From Motor Vehicle Safety and Bumper Standards; Extension of Comment Period 2026-17742	Final rule	Aug 31

Everything from the National Highway Traffic Safety Administration · Published in October 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.