You have to make a journey in foggy conditions. You should

Explanation: If you're planning to make a journey when it's foggy, listen to the weather reports on the radio or television. Don't travel if visibility is very poor or your trip isn't necessary. If you do travel, leave plenty of time for your journey. If someone is expecting you at the other end, let them know that you'll be taking longer than normal to arrive.

Category: Vehicle Handling

References: The Official DVSA Guide to Driving: Section 12