Ace your UK Driving Theory Test! With our comprehensive practice exams featuring multiple-choice questions, detailed explanations, and helpful hints, you'll have everything you need to pass with confidence. Start your journey to becoming a licensed driver today!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


When may you use your fog lights?

  1. When it's raining heavily

  2. When visibility is less than 100 meters (328 ft)

  3. During nighttime driving on highways

  4. All the time for safety

The correct answer is: When visibility is less than 100 meters (328 ft)

Fog lights are an additional set of lights on a vehicle that are specifically designed to be used in foggy or other adverse weather conditions. It is important to only use fog lights when the visibility is limited, such as when it is raining heavily or when visibility is less than 100 meters. Using fog lights when they are not necessary, such as during nighttime driving on highways or all the time, can actually create a hazard for other drivers by creating glare and reducing their ability to see. Therefore, option B is the most accurate answer.