Traffic-light signalling and operation

Traffic lights are lights put in the street to help keep people safe. They are red, yellow, and green and tell drivers when to stop, go, and slow down. The red light means stop (no driving), the yellow light means slow down and prepare to stop, and the green light means go (you can drive). Traffic lights also help ensure that drivers take turns and don't crash into each other. You should always pay attention to traffic lights and obey them to stay safe.