基于公交IC数据的公交服务可靠性分析

he process of urbanization accompanies with significant increase of traffic needs. Development of bus system will have obvious effect on relieving current traffic pressure. By improving the share of bus system among transit modes and its reliability, we will be able to attract more and more people to choose bus service and hence make it the primary traffic mode for majority. There are multiple unforeseeable factors can influence bus system service performance, among which, bunching is the most common mark as bus service unreliable. In this paper, bus transit data is extracted from Bus Intelligent Card, upon which a method of calculation regarding with the headway between adjacent arriving buses is used to assess bus service reliability and the service optimization strategy follows. The data of a route are used as an example to run reliability assessing process and it suggest that bunching is more likely to occur on morning peak.