What is the function of turn signals?

[Megan]

The function of turn signals is to indicate to pedestrians or other vehicles the direction in which the vehicle is about to turn, either left or right. On highways, they also indicate the direction for overtaking or lane changing. When both left and right turn signals flash simultaneously, it indicates that the vehicle is in an emergency situation, alerting other vehicles to pay attention. The light of turn signals is yellow, and they must be used when starting, changing lanes, or turning. Car turn signals can be classified by material into: 1. Gas car turn signals; 2. LED car turn signals. By base type, they can be divided into: 1. P21W; 2. PY21W; 3. W21W; 4. P27W; 5. W5W; 6. H5W. By location, they can be categorized into: 1. Front turn signals; 2. Rear turn signals; 3. Side turn signals.