A turn signal is a vehicle feature that indicates a driver's intention to turn or change lanes. It typically consists of blinking lights located on the front and rear of the vehicle. When activated, these lights flash to alert other drivers and pedestrians of the upcoming maneuver, promoting safety on the road. Turn signals are controlled by a lever or switch located near the steering wheel. In many vehicles, the signal will automatically turn off after completing a turn. Proper use of turn signals is essential for effective communication between drivers, helping to prevent accidents and ensure smoother traffic flow.