For which purposes is a horn allowed to be used in built-up areas?

The horn in built-up areas is primarily used as a warning signal to alert other road users of your presence or to prevent an accident. This aligns with the safety-oriented nature of German traffic regulations, which prioritize caution and awareness among drivers, cyclists, and pedestrians.

While some might think that a horn can also be used for overtaking or calling signals, these uses are not permitted in built-up areas. Overtaking should be done without relying on the horn, and using the horn as a calling signal can lead to noise pollution, which is discouraged in residential areas.

Thus, understanding the specific purpose of the horn—as a warning signal only—is crucial for maintaining safety and adhering to German traffic laws. It emphasizes the importance of using your horn responsibly, promoting a more peaceful and safe environment for all road users.