Federal Motor Vehicle Safety Standards; Anti-Ejection Glazing for Bus Portals; Bus Emergency Exits and Window Retention and Release
fmvss · National Highway Traffic Safety Administration · Published 2024-10-30 · Effective 2024-12-30 · 89 FR 86255
Document
Document number
2024-24462
Federal Register citation
89 FR 86255
CFR reference
49 CFR 571
Type
Rule
Action
Final rule.
Category
fmvss
Sub-agency
National Highway Traffic Safety Administration
Publication date
2024-10-30
Effective date
2024-12-30
DOT docket
Docket No. NHTSA-2024-0061
Abstract
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.