Great Britain Theory Test Coach
Weather and visibilityQuestion 356 of 424

When MUST you switch off front or rear fog lights?

  1. When visibility improves
  2. When you pass a junction
  3. When another car flashes you
  4. When you stop at traffic lights
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Correct answer: When visibility improves

Fog lights dazzle others and hide your brake lights. Switch them off as soon as visibility improves.

Source: The Highway Code (Department for Transport, GOV.UK), Driving in adverse weather conditions (226 to 237), Rule 236

Practice weather and visibility

Questions last reviewed: 18 October 2026