When would you typically need to use your turn signal?

Using a turn signal is essential for communicating your intentions to other drivers on the road, and it should be used in various situations, not just limited to one occurrence. Merging onto a highway is a scenario where signaling is crucial. When you prepare to merge, you're entering a space where other vehicles are already traveling at speed, and indicating your lane change is vital for safety. It alerts drivers to your intention to enter their lane, allowing them to adjust their speed or position if necessary.

In this context, while some of the other choices mention valid situations related to turn signal use, they do not encompass the full range of scenarios where signaling is required. For instance, not signaling when changing lanes, as one option suggests, could lead to unsafe driving conditions, as other drivers won't be aware of your intentions. Similarly, only signaling at red lights or only when turning at intersections narrows the application of turn signaling too much, ignoring critical situations like merging. Proper use of turn signals contributes to overall traffic safety and helps maintain a smooth flow of traffic among all road users.