# Federal Motor Vehicle Safety Standards; Head Impact Protection
> **National Highway Traffic Safety Administration** · Correcting amendments. · Published 1998-01-02 · Effective 1998-01-02 · 63 FR 27
## Document
- **Document number:** 97-34052
- **Category:** fmvss
- **Sub-agency:** National Highway Traffic Safety Administration
- **Federal Register citation:** 63 FR 27
- **CFR reference:** 49 CFR 571
- **Publication date:** 1998-01-02
- **Effective date:** 1998-01-02
- **DOT docket:** Docket No. NHTSA-97-3145
## Abstract

On April 8, 1997, (62 FR 16718) NHTSA published a final rule amending Standard No. 201, ``Occupant Protection in Interior Impact,'' to include another phase-in option, allow manufacturers to carry forward credits for vehicles certified to the free-motion headform impact requirements prior to the beginning of the phase-in period, exclude buses with a GVWR of more than 3,860 kilograms (8,500 pounds), specify that all attachments to the vehicle upper interior components are to remain in place during compliance testing, and make other changes to the test procedure to clarify some areas of confusion. This document corrects minor errors in S2 and S8.12(a)(1) of Standard No. 201 (49 CFR 571.201).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/01/02/97-34052/federal-motor-vehicle-safety-standards-head-impact-protection)
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