基于公交路网数据的动态路况信息生成方法

Dynamic Road Condition Information Generation Method Based on Public Traffic Network Data

目前城市普通路网数据结构的路况处理生成方法还无法直接满足公交运营调度所关注的线路路况和站间路况的实际需求,本文提出一种基于公交路网和公交车GPS数据的动态路况信息生成方法。分析了公交系统的线网数据结构和专题特性,构建了以公交线路、站点和站位为基本要素公交路网数据,采用了四参数法执行公交GPS轨迹点与公交路网数据地图匹配处理,实现了线路或区间的速度计算和路况信息渲染生成。以北京市西城区为例,进行了该区域公交路况信息生成方法的实验验证。

For the road condition processing generation method of the current urban road network data structure can not meet the actual demand of the road conditions and the inter station road conditions concerned with the bus operation and dispatching,this paper proposes a dynamic traffic information generation method based on bus network data.First,according to the actual business needs of city bus operation and scheduling,and starting from the bus line data structure and special characteristics of public traffic network system,we build the public traffic network data on the basis of the elements of bus lines,stops and stations.Then GPS trajectory points are matched with public traffic network map data using four parameters method,the bus line or interval velocity is computed,and the road condition information is generated and rendered.At last,taking Xicheng District of Beijing as an example,experimental verification of the proposed traffic information generating method was carried out in the region.