Introduction - If you have any usage issues, please Google them yourself
Traffic lights (Traffic Lights) or traffic lights , is the time to exchange the exchange of light color signal, usually set at the fork or other traffic control needs to place the road traffic to the vehicle driver and Pedestrian, control of its traffic, stop and turn traffic control facilities. Traffic lights are energy-operated traffic control facilities, with red, yellow and green tricolor lights or supplemented by sound signals, indicating the suspension of vehicles and pedestrians, attention and travel.