Find a traffic signal lamp and the signal lamp effect diagram
The red light means no traffic, the green light means permission to go through, and the yellow light indicates warning.
The traffic lights for road intersection, through a run or stop instruction for vehicles and pedestrians, to arrive at the same time people, car traffic flow to reduce the mutual interference, so as to improve the capacity of the intersection, the intersection smooth and safety guarantee.
The traffic signal lamp for vehicle signal lamp, signal lamp, non motor vehicle lanes, pedestrian crosswalk signal lamp lights, directional signal lights, flashing warning lights, level crossing signal
The traffic lights are made up of red lights, green lights and yellow lights
