What is the function of turn signals?

Turn signals serve a specific and essential function in vehicle operation by communicating to other drivers and road users your intentions to turn or change lanes. This visual indication helps maintain safety on the road by alerting those around you about your planned maneuver, allowing them to react accordingly.

When used correctly, turn signals can help reduce the likelihood of accidents by ensuring that all road users are aware of your actions, thus facilitating smoother traffic flow and improving overall road safety. Options that refer to signaling for emergency stops, notifying pedestrians, or indicating speed do not accurately represent the primary purpose of turn signals, which is focused on indicating directional changes to other drivers.