Traffic lights

Description

There are two kinds of traffic lights, to see the motor vehicle lights, usually refers to the red, yellow, green (green for blue and green) three kinds of color lights to control traffic lights. The green light is on, it allows the vehicles to pass, the yellow light yellow flash has crossed the stop line of vehicles can continue to pass; did not pass should slow down to the stop line stop and wait, when the red light to prohibit vehicular traffic. To pedestrians called crosswalk lights, usually by red, green (green to blue-green) two kinds of color lights composition used to command the traffic signal lamp, red light stop, green line.