When are you required to use turn signals?

Using turn signals is essential for safe driving, as they communicate your intentions to other road users. The correct choice indicates that you are required to use turn signals whenever you are turning or changing lanes. This practice helps prevent accidents and ensures the safety of all drivers, cyclists, and pedestrians around you.

When you signal before a turn, it informs other drivers of your intended action, allowing them to adjust their speed or position accordingly. Similarly, signaling while changing lanes alerts surrounding vehicles that you are merging into another lane, enhancing overall road awareness and safety.

The other choices don't cover the full spectrum of situations when turn signals are necessary. For example, signaling only when changing lanes fails to acknowledge the need to signal when making a turn, which is equally important. Similarly, restricting signals to nighttime driving or only when parking overlooks these critical actions that should always involve proper signaling for clarity and safety on the road.