When can you use high-beam lights while driving a truck from dusk till dawn?
Show the correct answer
Correct answer
B. On unlit roads, as long as this does not blind other drivers.
Explanation
In the photo, you can see a busy city road at dusk. When driving from dusk to dawn, you are allowed to use main beam (high beam) on unlit roads, as long as you do not dazzle other drivers - answer B.
The Road Traffic Act states that from dusk to dawn, on unlit roads, the driver may use main beam instead of dipped headlights (low beam) or together with them, as long as this does not dazzle other drivers or pedestrians walking in a column. At night two conditions must be met at the same time: an unlit road and no dazzling - that is why answer A, which allows main beam "always", is wrong, because on a street with street lamps main beam is forbidden. Answer C is directly contrary to the rules and to common sense: in fog, main beam reflects off water droplets and creates a white wall, so the Act provides for dipped headlights or front fog lights in that situation. From the high cab of a lorry, main beam dazzles particularly effectively.
Legal basis: Art. 51 para. 3 and Art. 30 para. 1 point 1 letter a of the Road Traffic Act (Prawo o ruchu drogowym)