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交叉口是各种交通流向的交汇点,是城市道路网最常见的瓶颈。交叉口的交通运行状况对整个路网的交通运行起着至关重要的影响作用,交叉口的交通管理也是道路交通管理的重点和难点。我国当前公路平面交叉设计不够完善,规模小,很多地方难以适应交通的需求。综合中国的中小城市现状,可以看出交叉口运行主要存在以下一些问题:
Intersections are the intersection of various traffic flows and are the most common bottleneck in urban road networks. Traffic conditions at intersections play a crucial role in traffic operation of the whole road network. Traffic management at intersections is also a key and difficult point of road traffic management. The crossroad design of the current highway in our country is not perfect enough and the scale is small. It is difficult to adapt to the traffic demand in many places. Based on the status quo of small and medium-sized cities in China, it can be seen that the following problems mainly exist in the operation of intersections: