Traffic signal display order
The traffic lights (lights, lights) lighting order: Green - Huang Hong - green, over and over again; when light is required according to the actual situation of the long road and other factors to consider, such as traffic lights at the crossroads of a red light 30 seconds per minute 25 seconds, the green light, yellow light 5 seconds.
This setting is designed to allow people to see the red light first, which is not easily obscured.
Vertical traffic lights: at the top are red lights, middle yellow lights, and bottom green lights.
Horizontal traffic lights, no matter the left or right of the road: the closest to the middle of the road is the red light, the green light is on the side of the road, and the yellow light is in the middle.
