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. In addition, to reduce the likelihood of ejection, this final rule prohibits emergency exits from opening in the rollover test. 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.
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)). NHTSA is issuing this final rule to establish Federal Motor Vehicle Safety Standard (FMVSS) No. National Highway Traffic Safety Administration (NHTSA), Department of Transportation (DOT).
Side Glazing on the Non-Struck Side of the Bus Intrusion of Items Into the Survival Space.Updated Data Analysis (FARS Data 2004–2018).Safety Need (FARS 2004–2018 Data Analysis) MAP–21 (Incorporating the Motorcoach Enhanced Safety Act of 2012) National Traffic and Motor Vehicle Safety Act (Safety Act) NHTSA's Determination of MAP–21 Requirements and Considerations How This Final Rule Differs From the Notice of Proposed Rulemaking (NPRM) This repetition of headings to form internal navigation links Headings within the legal text of Federal Register documents. This table of contents is a navigational tool, processed from the Provide legal notice to the public or judicial notice to the courts. Rendition of the daily Federal Register on does not Until the ACFR grants it official status, the XML Legal research should verify their results against an official edition of
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