Set the code for the traffic lights?

The specifications for setting traffic lights in China are formulated by the Ministry of Transport, mainly based on the Road Traffic Safety Law of the People's Republic of China and the Installation Specifications for Road Traffic Signal Equipment in People's Republic of China (PRC). The following are general traffic light setting specifications:

Basis for establishment: The setting of traffic lights should be determined according to comprehensive factors such as intersection traffic volume, road width and pedestrian crossing.

Intersection signal light setting: intersection signal light should usually be set in the center of the intersection to ensure that the indication of the signal light can be clearly seen.

Types of traffic lights: Traffic lights are usually divided into red lights, yellow lights and green lights, which are used to direct the passage of vehicles and pedestrians.

Color and meaning of signal lamp:

Red light: There is no traffic. Stop and wait.

Yellow light: warning signal, indicating that it is about to turn red, so you should slow down and stop or pass the intersection.

Green light: traffic is allowed.

Indicating time of signal lamp: The time of red, yellow and green light should be set reasonably according to the actual situation of intersection to ensure smooth traffic and pedestrian safety.

Special circumstances: If necessary, special indicator lights such as left turn light, straight-ahead light and U-turn light can be set.

Signal light combination setting: signal lights in different directions can be combined to realize traffic command in different directions.

Pedestrian signal light setting: Set pedestrian signal lights at appropriate places to indicate when pedestrians can cross the road.

Maintenance and maintenance of equipment: Traffic signal equipment should be maintained and maintained regularly to ensure its normal operation.

Treatment of special intersections: For intersections under special circumstances, such as highway exits and roundabout, the setting of signal lights may require special planning and design.

Variable time control: some busy intersections may adopt variable time control to adjust the working mode of signal lights according to the traffic flow at different times.

These norms and principles are to ensure smooth traffic and pedestrian safety, and are also part of traffic management. The specific traffic lights will be arranged reasonably according to the actual situation in different areas and the characteristics of intersections.