由出租车和乘客构成的特殊结构排队系统仿真

Simulation of Special Structure Queuing System Made up of Taxis and Passengers

出租车排队系统的特殊性体现在:1)服务台移动;2)服务台与服务对象双向排队等待;3)服务台具备主动搜索服务对象的能力;4)服务时间受到路网动态交通流和信号灯的影响。基于此,采用离散事件仿真技术模拟出租车在路网上搜索乘客并提供出行服务的动态过程。校核与验证的结果表明:仿真模型能够更真实和精确地描述出租车运营系统,仿真结果与实际系统是一致的。

The taxi queueing system possesses special structure as follows： 1） the servers are mobile;2） not only passengers are in queues waiting for services,but taxis are often observed to be lining up to wait for passengers;3） the servers have the ability to search for passengers,4） a passenger＇s trip time is affected greatly by dynamic traffic flow and signals.Therefore,discrete event system simulation technology is used to model the dynamic process of taxis cruising in the streets and providing travel services.The results of verification and validation show that simulation model can illustrate taxi operation system more accurately,and the conclusions of this model are consistent with taxi operation system in reality.