When should you use your turn signal?

Using your turn signal is essential for communicating your intentions to other road users. The correct response emphasizes that you should signal when changing lanes, merging into traffic, or making turns. This practice ensures that other drivers and pedestrians are aware of your actions, helping to prevent accidents and improve overall safety on the road.

Signals serve as a warning system, providing time for others to adjust their decisions based on your movement. For instance, when you are changing lanes, signaling alerts adjacent drivers that you plan to occupy a different lane, allowing them to maintain a safe distance or adjust their speed accordingly. Similarly, signaling your intention to turn ensures that vehicles behind you and those crossing your path are prepared for your change in direction.

Other scenarios mentioned in the other options do not adequately encapsulate the broader situational awareness needed for safe driving. For example, signaling solely when parked or at a red light does not address the dynamic nature of roadway interactions, while using a turn signal only when driving over a certain speed neglects the importance of signaling at all times when changing positions on the road. Their limited contexts fail to cover the comprehensive necessity of turn signaling in maintaining safety and communication among all road users.