Turn signals are signaling devices on vehicles used to indicate the direction of a turn or lane change, typically consisting of yellow or red flashing lights located on the front and rear sides of the vehicle. When the driver activates the turn signal switch near the steering wheel, the lights on the corresponding side will flash at a regular frequency, and the corresponding arrow indicator will be displayed on the dashboard (a left arrow indicates a left turn, and a right arrow indicates a right turn). The design of turn signals varies across different vehicle models: some are independently installed on the bumper or rearview mirror, while others are integrated with the headlight or taillight assembly. For example, the turn signals of family cars may be small and simple, while luxury models may adopt an integrated design to balance aesthetics and functionality. Proper use of turn signals is a basic requirement for safe driving. If the turn signal malfunctions (such as flashing too fast or not lighting up), timely inspection and repair are required to avoid potential safety hazards.