What are turn signals?

[StRachel]

Turn signals, as the name suggests, are signal lights on a car used to indicate when the vehicle is about to turn, alerting drivers and pedestrians in front and behind. They are essential equipment on a vehicle. Turn signals are categorized by location into: 1. Front turn signals - Installed next to the car's headlights, used to warn vehicles ahead when turning. 2. Rear turn signals - Installed at the rear of the car, used to warn vehicles behind when turning. 3. Side turn signals - Installed beside the door of the first cabin or on the rearview mirror, used to warn adjacent vehicles when turning.