What is the primary purpose of using a turn signal?

The primary purpose of using a turn signal is to let other drivers know your intentions. Signaling is an essential part of safe driving as it communicates to those around you what you plan to do next—whether you're turning, changing lanes, or merging. This helps to prevent confusion and allows other drivers to adjust their actions accordingly, thus enhancing overall road safety.

While warning pedestrians and indicating lane changes are valid concepts, the comprehensive function of turn signals encompasses all aspects of driver communication regarding any vehicle movement. Additionally, while making a vehicle look good might seem appealing, it does not contribute to safety or communication on the road.