Traffic lights, also known as traffic signals, are signaling devices that control the flow of traffic at road intersections, pedestrian crossings, and other locations. They use colored lights (red, yellow, and green) to indicate when vehicles and pedestrians should stop, slow down, or go.
Traffic lights are important for several reasons:
Traffic lights work by cycling through a sequence of colors (red, yellow, and green) to control the movement of vehicles and pedestrians. Each color has a specific meaning:
Traffic lights typically follow a standard sequence of colors:
Some traffic lights also have additional signals, such as:
Modern traffic lights use advanced technology to improve traffic flow and safety. Some of the features of today's traffic lights include: