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DOT/NHTSA RIN: 2127-AM21 Publication ID: Fall 2022 
Title: FMVSS No. 208 THOR-50M Compliance Option 

This notice proposes incorporating the THOR-50M (THOR), a new 50th percentile male anthropomorphic test device (ATD), into FMVSS No. 208, "Occupant crash protection," for use in compliance testing at the manufacturers' option. A separate contemporaneous rulemaking action will propose to incorporate THOR into 49 CFR part 572. This rulemaking action will allow NHTSA to permit manufacturers to select the use of THOR in belted and unbelted barrier crash testing instead of the Hybrid III 50th percentile male ATD. This action will propose injury assessment reference values (lARVs) for use with the THOR in the frontal crash test requirements of FMVSS No. 208 that are comparable to the lARVs currently used with the current Hybrid Ill dummy.

Agency: Department of Transportation(DOT)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 49 CFR 571.208   
Legal Authority: delegation of authority at 49 CFR 1.95   
Legal Deadline:  None
Action Date FR Cite
NPRM  03/00/2023 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Carla Rush
Safety Standards Engineer
Department of Transportation
National Highway Traffic Safety Administration
1200 New Jersey Avenue, SE,
Washington, DC 20590