Have you ever heard something about China, China is known as the "bicycle kingdom", which means it has the most national bikes in the world. Especially in Shanghai, a modern city, the traffic will be terrible without led traffic lights.
However, bike is simple in structure, once touched, it would fall, even worse, it has poor stability, so it is the weakness in the transport. In the traffic accident, the number of injured who goes out by bicycle ranks the first, and the number of casualties in the second. In China, children over the age of 12 can be afforded a bicycle on the road, and they need to obey the traffic signal light rules to ride in the slow lane. And China's traffic regulations have made the stipulation of the led traffic lights:
1) When the green light is on, it allows the vehicles, pedestrians, but vehicles are not allowed to impede the turning of the vehicle straight and pedestrian traffic was released.
2) When the
led traffic signal light is yellow, no cars, pedestrians, but has crossed the stop line of vehicles and has entered the pedestrians in crosswalks, may continue to pass.
3) When the red light, no vehicles, pedestrians.
4) When the green arrow led traffic signal is on, it allows the vehicles to pass the direction indicated by the arrow.
5) When the yellow light is flashing, vehicles, pedestrians may pass to ensure that the principle of security.
In a word, it is very necessary for us to obey the led traffic signal laws, or the traffic will be in a mess and become very terrible, and the air pollution will be more and more serious.