Great Britain Theory Test Coach
Weather and visibilityQuestion 335 of 424

When may you use front or rear fog lights?

  1. Whenever it is raining
  2. When visibility is seriously reduced
  3. At night on any road
  4. When you follow a large vehicle
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Correct answer: When visibility is seriously reduced

Use fog lights only when you cannot see far. Switch them off when visibility improves.

Source: The Highway Code (Department for Transport, GOV.UK), General rules, techniques and advice for all drivers and riders (103 to 158), Rule 114

Practice weather and visibility

Questions last reviewed: 18 October 2026