Question 4022
The rear fog light may only be used when...
- driving at an abnormally low speed.
- driving on high-mountain roads.
- weather conditions are especially unfavorable.
Show answer and explanation
Correct answer: weather conditions are especially unfavorable.
You must turn on the rear fog light when visibility is very poor: dense fog, very heavy rain, heavy snowfall, or dense clouds of smoke or dust. In other situations, it must stay off because it blinds the driver behind you. Driving very slowly or climbing a mountain pass does not justify using it. In the image, the car ahead has it on in very heavy rain.