What is the main purpose of using hand signals while driving?

Using hand signals while driving primarily serves as a way to communicate intentions to other drivers. This is especially important in situations where vehicle indicators may not be visible due to the angle of the vehicle or if the electrical system fails. By using clear and standardized hand signals, a driver can effectively inform those around them about their intentions to turn, stop, or change lanes.

For instance, extending the left arm straight out signals a left turn, while raising the arm at a right angle indicates a right turn. This form of communication enhances safety on the road, as it helps prevent misunderstandings between drivers and allows for better traffic flow.

Other options like demonstrating traffic laws or showing off driving skills do not align with the primary function of hand signals. Distracting other drivers goes against the very purpose of road safety, which prioritizes clear and effective communication to prevent accidents.