Wow.. Good luck, pal.
I’ve been in it before. I could see one stripe in the road in front of me and the tail lights intermittently of the truck in front of me. If someone had stopped, or if I had stored it would have been a pile up. You don’t stop in fog.slow, don’t stop. It ain’t a great option but there is no other.
•Drive with lights on low beam. High beams will only be reflected back off the fog and actually impair visibility even more.
•Reduce your speed -- and watch your speedometer. Fog creates a visual illusion of slow motion when you may actually be speeding.
•Listen for traffic you cannot see. Open your window a little, to hear better.
•Use wipers and defrosters as necessary for maximum visibility.
•Use the right edge of the road or painted road markings as a guide.
•Be patient. Do not pass lines of traffic.
•Do not stop on a freeway or heavily traveled road. If your car stalls or becomes disabled, turn your vehicle's lights off, and take your foot off of the brake pedal. People tend to follow tail lights when driving in fog. Move away from the vehicle to avoid injury.
From another source,http://www.drive-safely.net/driving-in-fog.html
Sometimes, foggy conditions just becomes too thick. You know your limits. If you find that you're exceeding your comfort zone, it might be best to stop until the fog lifts. But this is an extremely dangerous situation! If you can't see, either can anyone else. Try to get as far off the road as possible. Pull into a driveway, parking lot, rest area, side street, or any other place where you can get away from heavy traffic flow. But if the roadway shoulder is your only option, pull way over. Go into the grass if necessary. If there's a curb, drive over it and park on the other side of the curb. Stay buckled up and turn your lights off! If you leave your lights on, people might think you are driving on the roadway and rear-end you. Make sure your foot is off the brake pedal, and do not use your flashers. Keep all your lights off. If there is shelter nearby, try to get there quickly. Otherwise, stay in your car and stay buckled up.