关键词: 交通工程, 状态相图, 车头时距模型, 公交系统, 发车间隔

Abstract:

The bus route is a seemingly simple but complicated traffic system, and several random factors cause various time- headway patterns and operation state on the route. The time- headway is affected by vehicle capacity, departure interval and arrival rate of passengers. This paper incorporates vehicle capacity, departure interval and arrival rate of passengers into an improved time-headway model. Using the model, the phase diagram of bus route and mutual evolutionary process are identified and such four distinct states consist of regular state, transient state, pairing and clustering state, which gives a deeper understanding of the bus route system.

Key words: traffic engineering, phase diagram, time-headway model, public transportation system, departure interval