When is it mandatory to signal your intentions while driving?

Signaling your intentions while driving is essential for ensuring safe communication with other road users. It is mandatory to signal when changing lanes, turning, and merging onto a roadway because these actions directly impact the movement and decisions of surrounding vehicles and pedestrians. By using signals, drivers indicate their planned maneuvers, providing others with the opportunity to react appropriately, which is crucial for preventing accidents.

Failing to signal during these actions can lead to confusion and potential collisions, as other people on the road may not anticipate a vehicle's movements without clear communication. For instance, when merging onto a roadway, a driver’s signal alerts those already on the road about their intention to enter, allowing them to adjust their speed or position accordingly. This practice helps maintain a smooth and predictable traffic flow, enhancing overall safety on the road.