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Analysis of dilemma zone for pedestrians at high-speed uncontrolled midblock crossing

机译：高速不受控中路口行人困境区域分析

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Pedestrians are vulnerable to accidents and are at risk whenever they share road space with vehicular traffic. The risk to pedestrians is especially high in countries like India where a large number of pedestrians are seen on roads with vehicular traffic not yielding to their needs. Therefore, it is not surprising that many of the victims of road accidents in India, particularly in urban areas, are pedestrians. One of the primary reasons for accidents at pedestrian crossing (when drivers do not yield to pedestrians) lies in the inability of pedestrians to judge the safe gap while crossing a road. Often pedestrians are in a state of confusion/dilemma while making a decision on whether to accept or reject a gap. Under these circumstances, decision making for pedestrians during road crossing is a tough task. This paper aims at analyzing and quantifying the dilemma zone for crossing pedestrians at high-speed uncontrolled midblock crossings. A field study was undertaken in which crossing pedestrians and through-moving vehicles were recorded by placing video cameras at selected midblock road sections, having marked pedestrian crossing. Total of 1107 pedestrian lags/gaps were extracted and studied with consideration of both temporal and spatial lags/gaps for analysis. Dilemma zone was determined by using different methods such as the gap cumulative distribution method, the binary logit method, the support vector machine and the probabilistic method. For the selected midblock sections, dilemma zone started at 49 m and ended at 62 m upstream from the marked pedestrian crossing. The upper and lower boundaries of dilemma zone can be further used to develop a pedestrian assistance system at midblock crossing for the safe movement of pedestrian. (C) 2016 Elsevier Ltd. All rights reserved.
机译：行人很容易发生事故，每当他们与车辆通行时，他们就有危险。在像印度这样的国家中，行人的风险尤其高，在这些国家，在行车流量不满足其需求的道路上看到大量行人。因此，不足为奇的是，在印度，尤其是在城市地区，道路交通事故的许多受害者都是行人。行人过路处发生事故的主要原因之一（当驾驶员不屈服于行人时）在于行人在过马路时无法判断安全间隙。在决定是否接受差距时，行人经常处于混乱/困境的状态。在这种情况下，过马路的行人决策是一项艰巨的任务。本文旨在分析和量化在高速非控制中路口的行人过境的困境区。进行了一项实地研究，其中通过将摄像机放置在选定的中间路段，并标记了行人过路处，记录了行人和通行车辆的情况。提取并研究了总共1107个行人的滞后/差距，并同时考虑了时间和空间滞后/差距进行分析。困境区是通过不同的方法来确定的，例如间隙累积分布法，二进制对数法，支持向量机和概率法。对于选定的中块路段，两难区的起点是标记的人行横道，距起点49 m，上游62 m。困境区的上下边界可进一步用于在中间路口建立行人辅助系统，以确保行人安全行驶。 （C）2016 Elsevier Ltd.保留所有权利。

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