In Portuguese road regulations, when are rear fog lamps (luzes de nevoeiro à retaguarda) legally permitted to be switched on?
Answer and explanation
Correct answer: B. Only in severe fog or heavy atmospheric conditions causing substantially reduced visibility
- Step 1: Rear fog lamp use. Step 2. Article 61 restricts rear fog lamps exclusively to dense fog, heavy rain, or blizzards because their high intensity dazzles following drivers in normal or light rain conditions. Answer: Only in severe fog or heavy atmospheric conditions causing substantially reduced visibility. Why not the others: Using rear fog lamps in light rain or clear night is illegal and causes dangerous glare.
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