基于OpenStreetMap的城市公交专用道设置优化

Optimization of Urban Bus Lane Setting Based on OpenStreetMap

为合理设置公交专用道,通过OpenStreetMap(OSM)提取可设置公交专用道的路网,采用Stroke道路表示法将OSM路网与百度路网进行融合,结合百度地图实时交通数据实现交通态势可视化,从而准确直观地识别出公交专用道的设置路段。通过构建公交路阻函数模型,计算设置公交专用道前后的时间效益差,确定公交专用道的设置方案。最后以南昌市部分路网为例,通过SUMO软件仿真结果表明:在青山南路设置公交专用道可以使公交车辆延误降低19.6%;社会车辆延误降低10.8%。实例验证所提出的设置优化方法有利于减少交通延误,为合理设置公交专用道提供支持。

In order to reasonably set bus lanes,the road network that can set bus lanes was extracted through OpenStreetMap(OSM),and the OSM road network and Baidu Maps road network were integrated by using the Stroke road representation.The real-time traffic data of Baidu Map was combined to realize the visualization of traffic situation,so as to accurately and directly identify the set road sections of bus lanes.By constructing a bus resistance function model and calculating the time efficiency difference before and after setting up bus lanes,the setting plan for bus lanes was determined.Taking part of the road network of Nanchang City as an example,the effect of the bus lane was simulated using SUMO software.The simulation results show that the bus delay can be reduced by 19.6%after setting the bus lane on Qingshan South Road and the social vehicle delay was reduced by 10.8%.It is concluded that the proposed optimization method is conducive to reducing traffic delay and providing support for the reasonable setting of bus lanes.