You are driving within a built-up area during darkness. Oncoming drivers are flashing their headlights as a warning to you. What might this mean in this situation?

In German traffic rules, when other drivers flash their headlights at you during darkness within a built-up area, it usually serves as a warning about your lighting situation. Specifically, they may be indicating either that your vehicle is dazzling them (which means your lights are too bright or improperly adjusted) or that you have forgotten to switch on your dipped headlights, which are required during darkness to ensure your vehicle is visible without blinding others.

Turning on your main beam (high beam) in such situations is generally not correct because main beams can dazzle other drivers and are only to be used when no other vehicles are affected. Therefore, the correct response to such a warning is to check that your dipped headlights are on and properly adjusted to avoid dazzling others. Understanding this helps maintain safety and prevents causing dangerous glare on the road.