What is one of the key benefits of using turn signals?

Using turn signals is crucial because they alert other drivers of your intentions. This communication is essential for maintaining safety on the road. By signaling, you inform others about your plans to change lanes, make a turn, or merge, allowing them to anticipate your movements and react accordingly. This reduces the likelihood of collisions, as all road users are better aware of each other's actions.

The other options present ideas that are not aligned with safe driving practices. For instance, increasing the speed of the vehicle is not a function of turn signals; rather, their purpose is to enhance communication. Additionally, turn signals are required at all times when changing directions—not only at intersections. Lastly, turn signals are mandatory for all vehicles on the road, including motorcycles, and are not optional.