At what point is a driver obliged to switch on the lighting when driving inside a tunnel or underpass?

Question

DentroTest · Accepted Answer

Traffic regulations state that in tunnels, underpasses, and road sections marked with the 'Tunnel' sign, it is mandatory to keep the corresponding lighting switched on (usually dipped headlights) permanently while driving inside. This obligation applies always, regardless of the time of day, as the purpose is to compensate for the lack of natural light and to adhere to the principle of 'see and be seen'. The options referring to sunrise or sunset are incorrect, as those conditions apply to general driving on open roads, but not to the enclosed infrastructure of a tunnel where visibility is reduced regardless of the schedule.

At what point is a driver obliged to switch on the lighting when driving inside a tunnel or underpass?

Want to pass the Permit B (English) theory test first time?

📚 Keep practicing with more questions from Lighting and Optical Signaling

Which light is not mandatory on a car?

V

Using High Beams on Town Roads (Travesías)

Installing Extra High

Rear License Plate Light

Is advertising allowed on the license plate?

Mandatory Use of High Beams on Insufficiently Lit Interurban Roads

Consequences of Dirty Headlights and Vehicle Lights

Purpose of Turn Indicators

How to Warn of Sudden Braking or Speed Reduction