Florida Class E Knowledge ExamSafe Driving PracticesEasy

When driving in heavy fog, which of the following lighting techniques should you use?

  1. ANo lights are necessary if it's daytime fog.
  2. BHigh-beam headlights to penetrate the fog.
  3. CLow-beam headlights or fog lights.
  4. DParking lights only to avoid blinding other drivers.
Show answer & explanation

Correct answer: C. Low-beam headlights or fog lights.

High beams reflect off the fog particles, worsening visibility. Low beams or dedicated fog lights are designed to illuminate the road closer to the vehicle without causing excessive glare.

Why the other options are wrong

  • A. Even during daytime, fog significantly reduces visibility, making lights essential for both seeing and being seen.
  • B. High beams reflect off fog, creating glare and reducing visibility even further.
  • D. Parking lights are not bright enough to illuminate the road or make your vehicle visible in fog.

Driving in Fog

Adjusting driving techniques and vehicle lighting to safely navigate conditions of reduced visibility due to fog.

  • Use low-beam headlights or fog lights.
  • Reduce speed significantly.
  • Increase following distance.

Memory trick: Weather changes, driving habits change too, for safety through and through.

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