When must you use your turn signal?

Using your turn signal before making any turns or lane changes is a crucial aspect of safe driving. It serves as a way to communicate your intentions to other road users, which helps prevent misunderstandings and potential accidents. Signaling allows other drivers, cyclists, and pedestrians to anticipate your actions, providing them with the opportunity to react accordingly. Proper use of turn signals is not limited by time of day, traffic conditions, or other drivers’ actions; it is a standard practice that enhances overall road safety.

The other options suggest conditions or limitations that could compromise safe driving habits. For example, signaling only during the day or in heavy traffic could lead to dangerous situations during nighttime or in lighter traffic when turns or lane changes are equally necessary. Additionally, relying on other drivers’ signals to determine when to signal yourself is not a safe practice, as it can create confusion on the road.