When may you use rear fog lights?
Question 18 of 45 in the free class B mock exam · Laws & rules.
A driver has rear fog lights fitted on the car. When is it permitted to use these?
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Right answer and explanation
Right answer: D. When visibility is greatly reduced by fog or heavy snow
Rear fog lights should only be used in severely reduced visibility, typically below 50 metres, because otherwise they unnecessarily dazzle traffic behind.
Source: Trafikkreglene § 15