# Federal Register #2026-21730

NHTSA seeks comments on proposed THOR-50M crash test dummy regulations

**Buyer:** National Highway Traffic Safety Administration (NHTSA), Department of Transportation
**Posted:** October 23, 2026
**Respond By:** November 22, 2026
**Identifier:** 2026-21730

NHTSA is seeking public feedback on proposed regulations for the THOR-50M crash test dummy; this is a regulatory notice, not a procurement opportunity.
- Buyer: National Highway Traffic Safety Administration (NHTSA), within the U.S. Department of Transportation.
- Subject: Proposed updates to 49 CFR Part 572 covering the THOR-50M 50th-percentile adult male crash test dummy and related specifications and test procedures.
- Topics for feedback include an additional spine configuration, an alternative face insert, and a proposed upper-arm modification; supporting technical documents are available.
- The Alliance for Automotive Innovation requested an extension of the comment period.
- No products or services are being purchased, and no OEMs or product vendors are identified.

### Description

NHTSA extends the public comment period for its Supplemental Notice of Proposed Rulemaking concerning the THOR-50M adult male crash test dummy. The SNPRM seeks comments on an additional spine configuration and an alternative face insert, and announces additional supporting documents. The underlying proposal would amend 49 CFR Part 572 to include the THOR-50M and its associated specifications and procedures. The comment deadline is extended from October 22, 2026, to November 21, 2026.

[View original listing](https://www.federalregister.gov/documents/2026/10/23/2026-21730/part-572-anthropomorphic-test-devices-test-device-for-human-occupant-restraint-50th-percentile-adult)