United States Department of Transportation
i
Develop a Retrofit Design for Guard Fence System To Enhance Motorcycle Safety
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2024-08-01
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[PDF-34.35 MB]
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Edition:August 2020–September 2023
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Abstract:Motorcyclists are among the most vulnerable users of the roadway system. The appropriate design of roadside safety systems plays an important role in the severity of injuries caused by motorcycle crashes. Data show that from 2004 to 2017, the number of fatalities related to motorcycle impacts against safety barriers was greater than the number of fatalities recorded from passenger car impacts against the same roadside safety devices. Although there are no guidelines addressing the proper testing and use of motorcycle retrofit barriers, there is a need to develop an appropriately designed guard fence system to address motorcycle-rider barrier impacts in which the rider is either in a sliding or upright position. Additionally, the retrofit guard fence system should maintain Manual for Assessing Safety Hardware (MASH) Test Level 3 (TL-3) compliance. This report provides details on the design conceptualization, crash tests and results, and performance assessment of the enhanced motorcycle guard fence system for MASH TL-3 and for motorcyclist impacts. The enhanced motorcycle guard fence system met the performance criteria for MASH TL-3 longitudinal barriers and did not show any snagging potential when the instrumented dummy interacted with the system. However, there were high neck axial forces observed in the anthropomorphic test device.
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