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

In built-up areas, the use of a horn is primarily regulated to prevent noise pollution and to ensure safety. According to German traffic laws, the horn can be used as a warning signal to alert other road users of potential danger. This is critical for preventing accidents, especially in environments where pedestrians and cyclists may be present.

However, the horn is not permitted for purposes like overtaking or calling. These actions can contribute to unnecessary noise and may cause confusion or irritation among drivers and residents. Therefore, it is essential to adhere strictly to the regulation that allows the horn to be used specifically as a warning signal in built-up areas to maintain safety and respect for the community.