一、引言城市轨道交通系统是构成现代城市公共交通系统的子系统之一。城市轨道交通系统对城市提供的服务状况体现在两个方面,一是交通的服务质量,二是运输质量。服务质量可以通过服务水平来表达,而运输质量则通过轨道交通客运的服务质量来描述。因此对轨道交通服务状况的评价主 I. Introduction The urban rail transit system is one of the subsystems that constitute the modern urban public transport system. Urban rail transit system to provide services to the city reflected in two aspects, one is the quality of service transport, and second, the quality of transport. Service quality can be expressed by service level, while transportation quality can be described by the quality of service provided by rail transport passenger. Therefore, the status of rail transit service evaluation of the main