Visibility is considerably reduced. When are you allowed to switch on fog headlamps?

You answered correctly by selecting all applicable circumstances under which fog headlamps may be used according to German traffic regulations. Fog headlamps are designed to improve visibility in conditions that can significantly impair sight, specifically in fog, rain, and falling snow.

Using these lamps in fog helps reduce the amount of light that is scattered back into the driver's eyes, which is a common issue in dense fog. In rain and snow, they assist in illuminating the road better without causing glare, allowing safer driving. Adhering to these regulations is essential for maintaining safety on the roads during adverse weather conditions. Understanding when to use fog headlamps not only protects your visibility but also helps ensure the safety of other road users.