Traffic lights factory tutor how do we know the traffic lights when crossing is a disk traffic lights indicate traffic.

At present, many cities have installed the international general traffic lights, four direction is at a crossroads, every side intersection has three traffic lights, and instructions on the left, go straight, right, each lamp are in red, green, yellow order change. One of the side road to the other three sides, all follow the red light stop, green line, yellow light, cross the line, the rules of yellow light did not cross the line stop. The original signal for each intersection is only a light, follow the left, straight road stop at a red light, driving range, right when the green light the principle of three directions are driving. Individual local regulations, on the left at a red light, straight vehicle parking, driving range, right when the green light right, left, straight road parking. This is to avoid driving block on the left and right straight bicycles, tianjin is specified before. When the green light to go straight and turn left should be a common rule of execution.

Red cars can't go straight, also can't turn left, but you can turn right. Have green light when the car can go straight, will be left, turn right. When the road is in the direction of light indicates a traffic lamp (arrow). Directional light is green light can be driving direction. Directional light to red light is not moving direction.