How Does Traffic Light Keep Traffic in Order?

Traffic Light is an indispensable element of modern traffic management.
In principle, traffic lights control the flow of traffic by alternating red, yellow and green lights. The red light stop, green light, yellow light warning rules are deeply rooted in people's hearts. Its control system is based on precise timer and sensor technology. The timer sets the duration of each color light, ensuring that the traffic flow switches in an orderly manner at a reasonable interval. Sensors can detect the flow of vehicles and pedestrians at the intersection, and some advanced traffic signal systems can automatically adjust the green time according to the real-time flow situation, improving the efficiency of the intersection.
In terms of Settings, traffic lights are installed in prominent locations at intersections for clear visibility by drivers and pedestrians. Their height, Angle and brightness are carefully designed. The height should ensure that it can be observed within a certain distance, the Angle should make the traffic participants in all directions can clearly identify the light signal, and the brightness should adapt to different weather and environmental conditions, whether it is sunny or foggy, it can play a normal role.
In addition, traffic lights are usually coordinated with each other. On urban main roads, a series of traffic lights realize functions such as green wave belt through networking or preset programs, so that vehicles can continuously pass through multiple intersections at a certain speed, reduce the number of stops, alleviate traffic congestion, and ensure the smooth operation of the entire urban traffic network.