堵、堵、堵,还是堵,堵成为现代城市交通的主旋律;开车的没有骑自行车的速度快也是都市交通的一大怪相。这些不仅归咎于汽车、尤其家庭用汽车数量激增,还有道路设置规划不合理及交通管控信号不科学的原因。在日常生活中,我们经常会遇到这样的情况:明明一个方向上没有车辆,绿灯依然该亮多久还亮多久,而另一个方向的车辆却排成一条长龙,这个方向的红灯使得后面的车辆越堵越多。这就是城市交通管控信号设置不合理的表现之一。因此在解决交通拥挤,尤其是城市交通拥堵现象时,科学 Blocking, blocking, blocking, or blocking, blocking the main theme of modern urban transport; driving a bike is not the speed of urban traffic is also a strange phase. These are not only blamed on the proliferation of cars, especially home-use cars, as well as the unreasonableness of road planning and the unscientific nature of traffic control signals. In everyday life, we often encounter such a situation: it is obvious that there is no vehicle in one direction, how long the green light should be on for how long, and the other direction of the vehicle is lined up in a queue. The red light in this direction makes the back The more vehicles plug more. This is one of the manifestations of urban traffic control signals set unreasonable. Therefore, in solving traffic congestion, especially in urban traffic jams, science