In which of these circumstances are you obliged to change from the beam headlights to low beam?
Show the correct answer
Correct answer
C. When approaching a moving vehicle in front of you and there is a possibility of blinding the driver.
Explanation
The photo shows a street in a town with signs D-1 and D-6 with plate T-27, and cars coming towards you and moving away. You are obliged to switch from main beam to dipped headlights when you are approaching a vehicle in front of you and there is a possibility of dazzling its driver - answer C. A pedestrian walking in the same direction (A) and a vehicle on an intersecting road (B) are not mentioned in the Road Traffic Act.
The Act allows you to use main beam from dusk to dawn on unlit roads, as long as it does not dazzle others, and requires you to switch to dipped headlights when a vehicle is approaching from the opposite direction, when you are approaching a vehicle in front if its driver may be dazzled, and when a rail vehicle or a vessel is approaching whose drivers could be dazzled. The driver of the car in front of you sees your headlights in three mirrors at once - this dazzles more than lights from the opposite direction. That is why you switch to dipped headlights when you have come close enough to someone that your light reaches their car, and you switch back to main beam only after overtaking.
Legal basis: Art. 51 para. 3 of the Road Traffic Act (Prawo o ruchu drogowym)