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Proposed rule

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

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Sept. 22, 2026. Document 2026-19370. Updated Nov. 5, 2026.

What it does

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

What it would change

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

49 CFR 572

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

Before this

No earlier Federal Register document under regulation identifier 2127-AM20 since Jan. 1, 2025.

Since then:

What happens next and when

The documents referenced in this notification will be available in the docket as of September 22, 2026. You should submit your comments early enough to be received not later than October 22, 2026.

The agency's dates, word for word.

Document number2026-19370
ActionSupplemental notice of proposed rulemaking (SNPRM).
AgenciesTransportation Department; National Highway Traffic Safety Administration
PublishedSept. 22, 2026
Effective dateSept. 22, 2026
Comments closeOct. 22, 2026
Regulation identifier (RIN)2127-AM20
DocketNHTSA-2023-0031

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