How will a dirty front lamp influence night driving?
- Correct answer: It will affect the field of vision.
- The field of vision will grow.
- It will cause a dazzeling (blinding).
- Dirt will have no affect on the rider ability to recognize problems.
Why this is the answer
The correct answer in the official bank: It will affect the field of vision.
Dirt on the headlamps blocks and scatters part of the light, so the road is lit less brightly, less far and less widely. This affects the driver's field of vision at night, and obstacles, pedestrians and road markings are noticed later. Dirt does not enlarge the field of vision or dazzle the driver himself, so headlamps should be cleaned regularly.