Transportation Department, National Highway Traffic Safety Administration
NHTSA is issuing this final rule to establish Federal Motor Vehicle Safety Standard (FMVSS) No. 227, "Bus rollover structural integrity," to enhance the rollover structural integrity of over-the- road buses (motorcoaches), and other buses with a gross vehicle weight rating (GVWR) greater than 11,793 kilograms (kg) (26,000 pounds (lb)). This final rule, issued pursuant to the Moving Ahead for Progress in the 21st Century Act (MAP-21), requires the buses to provide a "survival space" in a rollover test to protect occupants from possible collapse of the bus structure around them. In addition, to reduce the likelihood of ejection, this final rule prohibits emergency exits from opening in the rollover test. This final rule ensures that bus roofs and side wall panels will resist deformation and intrusion into the occupant space in rollover crashes, and reduces the risk of emergency exits becoming ejection portals in a crash.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation National Highway Traffic Safety Administration 49 CFR Part 571 [Docket No. NHTSA-2021-0088] RIN 2127-AK96 AGENCY: National Highway Traffic Safety Administration (NHTSA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: NHTSA is issuing this final rule to establish Federal Motor Vehicle Safety Standard (FMVSS) No. 227, “Bus rollover structural integrity,” to enhance the rollover structural integrity of over-the-road buses (motorcoaches), and other buses with a gross vehicle weight rating (GVWR) greater than 11,793 kilograms (kg) (26,000 pounds (lb)). This final rule, issued pursuant to the Moving Ahead for Progress in the 21st Century Act (MAP-21), requires the buses to provide a “survival space” in a rollover test to protect occupants from possible collapse of the bus structure around them. In addition, to reduce the likelihood of ejection, this final rule prohibits emergency exits from opening in the rollover test. This final rule ensures that bus roofs and side wall panels will resist deformation and intrusion into the occupant space in rollover crashes, and reduces the risk of emergency exits becoming ejection portals in a crash. DATES: The effective date of this final rule is: December 30, 2024. Optional early compliance is permitted. Petitions for reconsideration: Petitions for reconsideration of this final rule must be received not later than February 14, 2022. ADDRESSES: Petitions for reconsideration …
Other Federal Register documents from the same docket.
Citation: 86 FR 74270
