However, intersections work as the bottleneck of city road network. Therefore, improving traffic condition of intersections could enhance the traffic efficiency.
而城市道路交叉口又是城市路网的瓶颈，因此改善交叉口的交通状况就能大大改善城市路网的交通效率。
2
The intersection of urban road network is an important urban node, is also a frequent accidents and traffic delays caused by the bottleneck point.
城市道路平面交叉口是城市路网中重要的节点，也是事故频发和造成交通延误的瓶颈点。
3
Because expressway work zones for maintenance often need lane closure, it will result in road capacity bottleneck and impact the stabilization and safety of expressway operation.