The invention provides a method for detecting an accidental congestion path. The method comprises the following steps: acquiring global positioning system (GPS) trajectory data of a plurality of vehicles in a research area in a target time period; dividing a road network of the research area into a plurality of path units, and determining road direction information of each path unit according to the obtained GPS track data; determining the average speed difference of each path unit in the current time period according to the GPS track data of the plurality of vehicles in the target time period; determining candidate paths according to the topological relation of each path unit in the road network and the average speed difference of each path unit in the current time period; and judging thesignificance of teach candidate path, and when the significance of the candidate path meets a preset significance level, determining the candidate path as the accidental congestion path. According tothe invention, detection of the accidental congestion path can be completed under the condition of considering the road direction, and the accuracy of the detection of the accidental congestion pathis improved.
本发明提供了一种偶发性拥堵路径的探测方法,包括:获取研究区域内多个车辆在目标时间段内的全球定位系统GPS轨迹数据;将研究区域的路网划分为多个路径单元,并根据获取到的GPS轨迹数据,确定每个路径单元的道路方向信息;根据多个车辆在目标时间段内的GPS轨迹数据,确定每个路径单元在当前时间段内的平均速度差异;根据路网中各路径单元的拓扑关系,以及每个路径单元在当前时间段内的平均速度差异,确定出候选路径;对候选路径的显著性进行判别,并当候选路径的显著性满足预设的显著性水平时,确定候选路径为偶发性拥堵路径。本发明能在顾及道路方向的情况下完成偶发性拥堵路径的探测,提升偶发性拥堵路径探测的准确性。
Method for detecting accidental congestion path
偶发性拥堵路径的探测方法
2020-07-10
Patent
Electronic Resource
Chinese
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