实用公交线网规划方法研究

Research on Bus-Route Network Planning

本文通过分析公交线网的服务特点,提出了一种“逐条布设、优化成网”的公交线网优化方法.该方法以全服务区总换乘次数最少,总乘行时间最短,客流分布均匀,线路走向与主要客流方向一致等为优化目标,算法简便,并成功地避免了公交优化中普遍存在的“维数灾难”问题,特别适用于大中型城市的公交线网优化.本方法已在南京市远期交通规划及近期交通对策中应用,效果良好.

A new method of bus-route network planning is presented by ana- lyzing the service characteristics of bus-route network.The following optimi- zation objects are adopted:to minimize the total number of changes from one route to another,to minimize the total number of passenger-kilometers (or passenger-hours),to even passenger distribution on the network,and to make the directions of bus-routes consistent with the directions of passenger flows. The algorithm is very simple,and the “problem of dimension disaster” is solved successfully.The method is suitable for large-sized and medium-sized cities and has been adopted in the transportation planning of Nanjing city, the result is satisfactory.