讨论城市交通,我们最关注两块信息来源:一个是道路,一个是车辆。首先,从城市道路分类来看,可分为四类:快速路、主干路、次干路、支路。通常来讲,快速路上主要是视频监控和卡口,主干路上主要是电警、卡口、视频监控,次干路和支路上以视频监控为主。除此之外,微波、雷达等等设备也是种类繁多。从车辆的角度来看,公交车载监控、出租 When discussing urban transport, we are most concerned about two sources of information: one is the road and one is the vehicle. First of all, from the perspective of urban road classification, can be divided into four categories: expressways, trunk roads, secondary roads, branches. Generally speaking, the expressway is mainly video surveillance and bayonet, the main road is mainly electric police, bayonet, video surveillance, secondary trunk and branch to video surveillance based. In addition, microwave, radar and other equipment is also a wide range. From the vehicle’s point of view, bus monitoring, rental