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交叉口是城市路网的重要组成部分之一。交叉口延误对人们出行服务与交通网络规划有着非常重要的意义。借鉴了图论中的对偶图思想将传统城市路网结构转换为对偶网络,结合北京市浮动车数据,建立交叉口延误分析模型,生成随时间动态变化的城市对偶路网序列图。通过对交叉口不同转向的延误数据生成的趋势图进行可视化分析,探讨交叉口延误规律,为人们出行服务与动态路径规划提供依据。
Intersection is one of the important components of urban road network. Intersection delays have important implications for people’s travel services and transportation network planning. Drawing on the dual graph idea in graph theory, the traditional urban road network structure is converted into a dual network. Based on the data of floating vehicles in Beijing, an analysis model of intersection delay is established to generate the urban dual network sequence diagram that dynamically changes with time. Through the visualization of the trend charts generated by the delay data of different turn directions at intersections, the article discusses the law of intersection delays and provides the basis for people’s travel services and dynamic path planning.