(1) This regulation applies to a headlight that is on at night.(2) A low-beam headlight must illuminate the road ahead of a light motor vehicle for at least 25 metres.(3) A high-beam headlight must illuminate the road ahead of a light motor vehicle for at least 50 metres.(4) Despite subregulation (2) , a low-beam headlight fitted to a light motor vehicle built before 1931, or to a moped, need only illuminate the road ahead of the vehicle for 12 metres.