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首页> 外文期刊>Journal of Transportation Technologies >Investigation Motorcycle Safety at Exit Ramp Sections by Analyzing Historical Crash Data and Rider’s Perception
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Investigation Motorcycle Safety at Exit Ramp Sections by Analyzing Historical Crash Data and Rider’s Perception

机译：通过分析历史碰撞数据和对骑手的感知来调查出口匝道段的摩托车安全

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摘要

The purpose of this study is to evaluate the safety performance of four exit ramp types and the major contributing factors on motorcycle crashes and injury severity of motorcycle riders. A six-year crash data were collected in Florida, and a web-based survey (234 samples) was conducted. 573 crashes were found at 419 exits, including 178 diamond exits, 71 directional exits, 85 loop exits and 85 outer connection exits. For a diamond exit, both the survey and crash data showed that this type was safer and more preferable by motorcycle riders; while a loop exit was the most dangerous exit due to the sharp curve and a certain length of curve with limited visibility. For a directional exit, longer ramp lengths and the reverse curvature are the major factors causing motorcycle crashes. For an outer connection exit, the riders rated it as a safe type; however, the data showed higher average crash frequency and rate than those at diamond exits or directional exits. The possible reason could be the unexpected curvature in the middle of the ramp, which could be dangerous if the rider is not familiar with the exit ramp location or doesn’t pay attention to the ramp curvatures. The crash predictive model was developed, and the result indicated that if all remained the same, a directional exit, a loop exit, or an outer connection exit will have 16%, 27%, and 42% more crashes than a diamond exit, respectively. The findings from this study can help policy-makers and engineers to develop and apply effective countermeasures to reduce motorcycle crashes and injury severity levels for different exit ramp types.
机译：这项研究的目的是评估四种出口坡道类型的安全性能以及对摩托车撞车和摩托车骑手伤害严重性的主要影响因素。在佛罗里达收集了六年的坠机数据，并进行了基于网络的调查（234个样本）。在419个出口处发现573个碰撞，包括178个菱形出口，71个定向出口，85个环形出口和85个外部连接出口。对于钻石出口，调查和碰撞数据均显示，这种类型的摩托车更安全，更受摩托车骑手的青睐。而环形出口是最危险的出口，原因是弯道较锐利，且一定长度的弯道可见度有限。对于定向出口，较长的坡道长度和反曲率是导致摩托车撞车的主要因素。对于外部连接出口，骑手将其评为安全类型;但是，数据显示的平均撞车频率和撞车频率高于钻石出口或定向出口的撞车频率和撞车频率。可能的原因可能是坡道中间的意外弯曲，如果骑手不熟悉出口坡道的位置或不注意坡道弯曲，则可能是危险的。开发了碰撞预测模型，结果表明，如果所有碰撞保持不变，则定向出口，循环出口或外部连接出口的碰撞事故将比菱形多16％，27％和42％分别退出。这项研究的结果可以帮助政策制定者和工程师制定并应用有效的对策，以减少不同出口坡道类型的摩托车碰撞和伤害严重性水平。

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