Correct answer
Fog or other conditions significantly reducing visibility.
Weather or environmental conditions significantly reducing visibility, such as fog, heavy rain, snow or smoke. Article 106 also permits them on narrow roads with many bends: a carriageway 6.50 m wide or less and signs for successive nearby bends. Night-time or poor lighting on a through-road alone is insufficient. They may be combined with dipped or main beams when applicable, without dazzling and with required position lights.
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Any clear night, merely because it is night-time.
Any poorly lit through-road, without another authorising circumstance.
Fog or other conditions significantly reducing visibility.
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