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Quebec SAAQ Knowledge Test · Question

In fog you should use:

Using low beams and fog lights is correct because their downward angle reduces the glare reflected off water droplets in fog, thereby maximizing visibility. In

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Question: In fog you should use:

Answer options:

  • High beams ✅ Low beams and fog lights if equipped
  • Parking lights
  • No lights

Correct answer: Low beams and fog lights if equipped

Explanation: Using low beams and fog lights is correct because their downward angle reduces the glare reflected off water droplets in fog, thereby maximizing visibility. In contrast, high beams project light directly into the fog, causing a blinding reflection, while parking lights or no lights fail to make the vehicle sufficiently visible to others. Under the Quebec Highway Safety Code, drivers must use appropriate headlights whenever atmospheric conditions reduce visibility. Expect questions like this on the SAAQ knowledge test to evaluate your understanding of adverse-weather driving safety and proper vehicle equipment usage.

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