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

In Germany, the use of a horn is regulated to ensure that it serves specific purposes without causing unnecessary disturbance. The allowed uses of a horn outside built-up areas are primarily for safety reasons.

1. As a warning signal: This allows drivers to alert others about potential danger, such as an upcoming obstacle or a vehicle that may not see them.

2. As an overtaking signal: This signals to other road users that you are intending to overtake, helping to communicate your intentions and ensure safety on the road.

Understanding these purposes is essential because using a horn indiscriminately or for other purposes, such as signaling for attention, is not permitted and could lead to safety issues or legal repercussions. By selecting both 1 and 2, you recognized the importance of using the horn appropriately in these critical situations to enhance road safety. Option 3, "As a calling signal," is not allowed outside built-up areas because it does not contribute to road safety in the same way as the other options.