Question 8005
If the protective covers on a vehicle's lights are very dirty…
- the illumination of the road is improved.
- the effectiveness of the lighting system is reduced.
- other drivers will not be dazzled.
Show answer and explanation
Correct answer: the effectiveness of the lighting system is reduced.
The lens or protective cover is the glass or plastic that covers each light. If it is very dirty, less light gets through and you light the road less effectively. Dirt also scatters the light rays and can cause you to blind others. In the image, the silver passenger car's headlights are covered in spots of dirt.