Traffic signals are important devices used to control the flow of vehicles and pedestrians at intersections. They use colored lights—red, yellow, and green—to communicate when to stop, prepare to stop, or go. For example, a red light means vehicles must stop, while a green light allows them to proceed. This system helps prevent accidents and keeps everyone safe on the road. In addition to lights, traffic signals often have pedestrian signals that indicate when it is safe for people to cross the street. These signals usually display a walking figure for go and a hand for stop. By following these signals, both drivers and pedestrians can navigate busy streets more safely.