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原文传递 NHTSA's Motorcoach Safety Research Crash, Sled, and Static Tests.

题名：	NHTSA's Motorcoach Safety Research Crash, Sled, and Static Tests.
关键词：	Highway-transportation; Motorcoach-travel.;Crash-events; Rollover-events; Seat-belts; Safety-research; Passenger-ejections.
摘要：	Motorcoach travel is a very safe mode of highway transportation in the United States. Over the ten year period between 1999 and 2008, on average, 16 fatalities have occurred annually to occupants of motorcoaches in crash and rollover events, with two of these fatalities being drivers and 14 being passengers. Among the 14 motorcoach passenger fatalities, 66 percent occurred in rollover events and 34 percent in roadside and multi-vehicle impacts. Ejection from motorcoaches accounts for 81 percent of passenger fatalities in motorcoach rollover events. Passenger ejections can be reduced by using a number of different technologies, such as reducing openings by using stronger window retention methods, improvements to the integrity of window and other glazing areas, use of seat belts, etc. For passenger ejection, incorporation of seat belts has been pursued as the most expedient way to mitigate ejection. Crash and sled tests to study the effects of using seat belts are described in the report. The National Highway Traffic Safety Administration (NHTSA) conducted a crash test in December 2007 at the NHTSA Vehicle Research and Test Center (VRTC) in East Liberty, Ohio. The primary purpose of the crash test was to record the crash pulse from a severe frontal crash of a motorcoach. This pulse was used in a sled test program to evaluate restraint performance. Unbelted dummies and dummies with lap belts had high head accelerations and Nij values, while the dummies with lap/shoulder belts had low head and neck loads. All dummies had low chest accelerations, chest displacements, and femur loads. All belted dummies remained in their seats while the unbelted dummies ended up in the aisle or in the seats in front of them. There was no evidence of any compartmentalization in the unbelted seat configurations, as the unbelted dummies did not stay in their seats. All seat attachments (including baseline) remained intact. The seats did not separate from the floor or side-rail.
报告类型：	科技报告