What must you observe when you enter a tunnel?

When entering a tunnel, it's important to follow specific traffic rules for safety. Driving with dipped headlights is required even during the day because it enhances visibility for both you and other drivers, helping to prevent accidents in the dimmer light of the tunnel. Additionally, removing sunglasses is necessary to adjust your vision to the lighting conditions inside the tunnel.

Switching on fog headlamps is not typically necessary in well-lit tunnels, as these are meant for reducing fog-related visibility issues rather than general illumination. Therefore, focusing on the first two points is crucial for maintaining safety and compliance with German traffic regulations when driving in tunnels.