In what situation is it typically acceptable to use your horn?

Using your horn to alert other drivers of danger is the primary and most appropriate situation for its use. The horn serves as an important safety tool, helping to prevent accidents by notifying other road users of potential hazards. For instance, if another driver is about to collide with your vehicle or if a pedestrian unexpectedly steps into the roadway, sounding the horn can effectively capture their attention and prompt necessary corrective actions.

In contrast, signaling a friend or expressing frustration through the horn does not enhance safety and could instead create confusion or escalate tension on the road. Attracting police attention is neither a common nor advisable use of the horn, as it could lead to misunderstandings and misinterpretations of your intentions. Therefore, the primary function of the horn revolves around ensuring safety by alerting others to potential dangers on the roadway.