When are you allowed to use fog headlamps also during the day?

Fog headlamps can be used during the day when visibility is significantly reduced due to specific weather conditions. In Germany, the two circumstances where you are allowed to use fog headlamps also during daylight hours are:

1. When there is fog present, which severely diminishes visibility.
2. When there is falling snow, as it can also limit visibility for drivers.

Though rain can affect visibility, it is not listed among the conditions for using fog headlamps in the daytime according to German traffic regulations. Therefore, understanding the particular scenarios that warrant their use is crucial for safe driving practices and compliance with the law. This ensures that visibility is enhanced for both the driver and other road users, thereby increasing safety on the road.