You're driving in fog that's starting to clear. When should you switch off your high-intensity rear fog lights? You're driving in fog that's starting to clear. When should you switch off your high-intensity rear fog lights?

• Possible answers:

   
• A. When visibility is more than 10 metres (32 feet)
• B. When visibility is more than 50 metres (164 feet)
• C. When visibility is more than 75 metres (246 feet)
• D. When visibility is more than 100 metres (328 feet)