中国智能交通发展的过程,大体上经历三个阶段,一是完善基础设施建设,二是在此基础上提高信息化程度,第三阶段才能发展智能化的交通管理。一些大城市借助于奥运会或者大运会、世博会背景,在智能交通系统当中建设得比较好。应该寻求把物联网时代的技术应用到智能交通上来。但是当前的困难有以下几点。现有的智能交通系统对车辆的感知还是被动的,为了检测到车辆的位置或速度,只能靠路边的设备去感知,而且这些设备 The process of China’s intelligent transportation development generally goes through three stages. One is to improve the infrastructure construction. The second is to improve the degree of informationization on this basis. Only the third phase can develop intelligent traffic management. With the aid of the Olympic Games or the Universiade and the World Expo background, some big cities are better constructed in the intelligent transportation system. It should seek to apply the technology of the Internet of Things era to intelligent transportation. But the current difficulties have the following points. The existing intelligent transportation system is still passive to the vehicle. In order to detect the position or speed of the vehicle, it can only be perceived by the roadside equipment, and these devices