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考虑坡长因素的纵坡坡度对交通事故的影响分析

, PP. 130-136

Keywords: 交通工程,交通事故,回归分析,连续下坡,坡度,坡长

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Abstract:

为了研究连续下坡道路的坡度、坡长与事故的关系,采集了5条典型连续下坡路段(总长度为76.68km)的1276起事故数据.从事故起数沿下坡方向的里程分布规律可以看出,事故集中分布在下坡路段的下半段,并且随着里程的积累而增加.对事故率与事故地点坡度和一定坡长的平均坡度分别进行线性和指数回归,对比回归结果和方程的样本决定系数R2,显示事故率与平均坡度的相关关系较事故率与地点坡度的相关关系更为显著.

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