What is the purpose of using turn signals while driving?

Using turn signals while driving serves the crucial purpose of alerting other drivers of your actions. This communication tool helps ensure that all road users are aware of your intentions, such as making a turn or changing lanes. By signaling, you reduce the risk of accidents by giving others the opportunity to react accordingly.

When drivers use turn signals, they contribute to a safer driving environment by facilitating better coordination on the road. Without this clear indication of intent, other drivers may misjudge your movement, leading to potential collisions.

The other options do not accurately reflect the primary function of turn signals. For instance, indicating speed is managed through the use of speedometers and is not communicated through signals. Additionally, showing frustration is not a constructive or safe use of turn signals, and while communication with pedestrians is important, it is typically achieved through eye contact or other means rather than using turn signals specifically designed for driver-to-driver communication.