If an approaching vehicle has its turn signal on, you must _______ and then start your turn if it is safe.

When an approaching vehicle has its turn signal on, it is a clear indication that the driver intends to make a turn. However, turning signals are not always a guarantee that the other driver will execute the turn as expected. Therefore, it is crucial to exercise caution and wait until you confirm that the other driver has actually begun their turn before proceeding with your own maneuver. This means observing the vehicle's speed and position closely to determine if it is indeed safe to proceed.

By waiting for the other driver to start their turn, you ensure that you have a clearer understanding of the situation, minimizing the risk of a collision. It promotes a safer driving environment, as unexpected actions can occur and maintaining awareness of both your movements and those of others is essential for road safety.