Where is it permitted to flash headlights to indicate your intention to overtake?

Flashing headlights to indicate an intention to overtake is permitted in specific situations according to German traffic rules.

Firstly, it is allowed in daylight outside built-up areas because visibility is generally good, and it helps alert other drivers to your intentions without causing confusion.

Secondly, flashing headlights is also permissible in darkness outside built-up areas. In these conditions, it serves as a safety measure, indicating to other road users that you intend to pass them when visibility may be reduced.

However, flashing headlights is not allowed in built-up areas during darkness because it could lead to misunderstanding and disturbance to other drivers and pedestrians. In urban settings, there is usually better signage and more ambient light, which makes overtaking safer without the need for such signals.

Understanding why certain combinations are necessary helps ensure safe driving practices, as it encourages clear communication on the road.