Data / Federal rules / 2024-24462
Federal Motor Vehicle Safety Standards; Anti-Ejection Glazing for Bus Portals; Bus Emergency Exits and Window Retention and Release
The National Highway Traffic Safety Administration published this final rule in the Federal Register on October 30, 2024. It took effect on December 30, 2024.
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What the agency says
This final rule establishes Federal Motor Vehicle Safety Standard (FMVSS) No. 217a, "Anti-ejection glazing for bus portals; Mandatory applicability beginning October 30, 2027," to drive the installation of advanced glazing in over-the-road buses (motorcoaches) and other large buses to reduce passenger and driver ejections. This final rule, issued pursuant to the Moving Ahead for Progress in the 21st Century Act (MAP-21), specifies impactor tests of the glazing material of side and roof windows. The impactor and impact speed simulate the loading from an average size unrestrained adult male impacting a window on the opposite side of a large bus in a rollover.
Key facts
- Document number
- 2024-24462
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; National Highway Traffic Safety Administration
- Published
- October 30, 2024
- Takes effect
- December 30, 2024
- Dates
- Effective date: December 30, 2024.
- Docket
- Docket No. NHTSA-2024-0061
- Regulation ID (RIN)
- 2127-AL36
- Code of Federal Regulations
- 49 CFR 571
- Topics
- Imports; Motor vehicle safety; Motor vehicles
- Pages
- 31
Other documents from the National Highway Traffic Safety Administration
Everything from the National Highway Traffic Safety Administration · Rules on imports · Rules on motor vehicle safety · Rules on motor vehicles · Published in October 2024
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.