When can you legally use your horn?

Using your horn is primarily intended for safety purposes. You can legally use your horn to alert other drivers of your presence when it's necessary to avoid a collision. This means that if another vehicle is about to drift into your lane or if you're approaching a blind intersection and there's a risk of an accident, utilizing your horn can be a crucial action to prevent a potential crash. It's a safety tool designed to communicate important information in critical situations.

Other options do not align with the legal and safe use of the horn. For instance, using the horn to express frustration or to signal a pedestrian does not conform to the intended purpose of the device. Similarly, honking at another driver for their behavior is not an appropriate use of the horn. Being aware of when to use your horn can greatly enhance road safety and promote courteous driving behavior.