一、引言交通是一座城市的命脉,它决定了城市的生活质量,决定了这座城市人民的幸福指数。地铁带来的好处当然就是出行的便利和快捷,不用再受堵车之苦,能有效解决用地紧张的城市中心区域的交通问题。我国城市轨道交通发展至今已有40余年的时间,虽然各城市地铁的建设和管 I. Introduction Traffic is the lifeline of a city, which determines the quality of life of the city and determines the happiness index of the people in this city. Of course, the benefits brought by the MTR are the convenience and speed of travel, no longer suffering from traffic jams and effectively solving the traffic problems in the tight urban areas. The development of urban rail transit in our country has been more than 40 years, although the construction and management of metro in various cities