Practice question

What techniques help you drive safely in fog?

  1. Use low beams, reduce speed, increase following distance, rely on road markings and reflectors, and use hazard lights if stopped.
  2. Use high beams to improve visibility.
  3. Follow other vehicles closely to use their tail lights.
  4. Speed through fog to reach clear air.

Answer: A — Use low beams, reduce speed, increase following distance, rely on road markings and reflectors, and use hazard lights if stopped.

Fog reduces visibility, so your safety hinges on lighting, speed, distance, and using road cues. The best approach is to use low beam headlights because they illuminate the road without reflecting off the fog back into your eyes, unlike high beams. Lowering your speed gives you more time to react to sudden obstacles, and increasing the following distance provides a larger safety buffer if the vehicle ahead brakes. Relying on road markings and reflectors helps you stay oriented when you can’t see far ahead. If you must stop on the roadside, turning on hazard lights warns other drivers and reduces the chance of a secondary collision. These steps together minimize glare, improve your reaction time, and keep you safer in fog.

Practice more: Master Driver Qualification 022-26 Practice Exam →