# Federal Motor Vehicle Safety Standards; Seat Belt Assemblies
> **National Highway Traffic Safety Administration** · Final rule. · Published 2005-08-22 · Effective 2005-10-21 · 70 FR 48883
## Document
- **Document number:** 05-16524
- **Category:** fmvss
- **Sub-agency:** National Highway Traffic Safety Administration
- **Federal Register citation:** 70 FR 48883
- **CFR reference:** 49 CFR 571
- **Publication date:** 2005-08-22
- **Effective date:** 2005-10-21
- **DOT docket:** Docket No. NHTSA 2005-22052
## Abstract

This final rule amends the Federal motor vehicle safety standard (FMVSS) for seat belt assemblies to redefine the requirements and to establish a new test methodology for emergency-locking retractors. Specifically, this final rule establishes a new acceleration-time corridor, adds a figure illustrating the new acceleration-time corridor, provides a tolerance on angle measurements, and adopts the same instrumentation specifications currently found in other FMVSSs containing crash tests.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/08/22/05-16524/federal-motor-vehicle-safety-standards-seat-belt-assemblies)
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