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Effects of stationary work zones on motorway crashes

机译:固定工作区对高速公路碰撞的影响

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The empirical Bayes (EB) before-and-after method was applied in this study in order to evaluate the change in the expected crash frequencies associated with the installation of work zones on motorways. A dataset of 15,570 stationary work zones including crash data, road segment data and traffic data was analyzed in order to estimate crash modification factors (CMFs) associated with different layout configurations of work zones. The findings of this research indicated a general increase in crash frequencies due to the installation of work zones. Furthermore the analysis has shown that all layout configurations that involve a crossover are very critical for safety: the highest CMFs are observed for the configurations with only a partial diversion of traffic to the opposite carriageway (with part of the traffic remaining in the ordinary flow direction and part travelling in the opposite carriageway). (C) 2016 Elsevier Ltd. All rights reserved.
机译:为了评估与在高速公路上安装工作区相关的预期碰撞频率的变化,本研究采用了经验贝叶斯(EB)前后方法。分析了包括碰撞数据,路段数据和交通数据的15570个固定工作区的数据集,以估计与工作区的不同布局配置相关的碰撞修正因子(CMF)。这项研究的结果表明,由于安装了工作区域,导致撞车频率普遍增加。此外,分析表明,所有涉及交叉的布局配置对于安全性都是非常关键的:对于仅将部分流量转移到对面行车道的配置(只有部分流量保持在正常流向),观察到了最高的CMF。和部分在对面的行车道中行驶)。 (C)2016 Elsevier Ltd.保留所有权利。

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