随着社会经济的发展,城市的交通问题越来越引起人们的关注。人、车、路三者关系的协调已成为交通管理部门需要解决的重要问题之一。城市交通控制系统是用于城市交通数据监测、交通信号灯控制与交通疏导的计算机综合管理系统,它是现代城市交通监测指挥系统中最重要的组成部分。随着城市机动车辆的不断增加,许多大城市如北京、上海、南京等出现了交通超负荷运行的情况,因此,自80年代后期,这些城市纷纷修建城市高速道路,在高速道路建设完成的初期,它们 With the development of society and economy, the traffic problems in cities have drawn more and more attention. The coordination among people, vehicles and roads has become one of the important issues to be solved by traffic management departments. Urban traffic control system is used for urban traffic data monitoring, traffic signal control and traffic diversion of the computer integrated management system, which is the modern city traffic monitoring command system is the most important part. With the increasing number of urban motor vehicles, many major cities such as Beijing, Shanghai and Nanjing have experienced traffic overload. Therefore, since the late 1980s, these cities have built urban expressways in succession, and at the initial stage of completion of expressway construction ,they