A turn signal is a light on a vehicle that indicates a driver's intention to turn or change lanes. It typically consists of amber or yellow lights located at the front and rear of the vehicle. When activated, these lights blink to alert other drivers and pedestrians of the upcoming maneuver, promoting safety on the road. Using turn signals is a crucial part of driving etiquette and is often required by law. Proper use helps prevent accidents by ensuring that other road users are aware of a vehicle's movements. This simple action contributes to smoother traffic flow and enhances overall road safety.