When is it appropriate to use your horn?

Using your horn is primarily meant to alert other drivers to your presence, especially in situations where they may not see you or could potentially create a hazardous situation. For instance, if you are approaching a vehicle that is about to change lanes into your path, using your horn can help ensure that the other driver is aware of you, allowing them to make safer decisions. This use of the horn is a safety measure designed to prevent accidents and maintain a safe driving environment for everyone on the road.

While other options suggest uses of the horn, they do not align with its intended purpose. Showing frustration is not constructive and could escalate road rage situations. Indicating that you are passing might lead to confusion or misunderstanding, as it is generally better to use signals for such communication. Signaling pedestrians to move can also be inappropriate; instead, drivers should be patient and allow pedestrians the right of way when necessary. The focus should always be on enhancing safety through clear and proper communication.