How soon before making a turn or lane change should you signal?

The correct answer is based on the principle of giving adequate warning to other drivers and pedestrians about your intentions. Signaling 30 meters before making a turn or lane change is a standard guideline that allows enough time for others on the road to notice your actions and respond appropriately. This distance is particularly important in maintaining safety by promoting effective communication on the road.

Signaling at this distance enhances predictability and reduces the likelihood of accidents that may occur if other drivers or pedestrians are unaware of your upcoming movements. It supports safe driving habits, especially in areas with heavy traffic or higher speeds, where decisions need to be made quickly.

By contrast, signaling too late, such as immediately before turning or at shorter distances, might provide insufficient time for others to adjust and could lead to unsafe conditions.