1993 Cadillac DeVille Owner's Manual - Page 213

I Start your windshield wipers washer, to help clearaccumulated road and dirt. Slow down carefully. Tips on Driving in Fog If you get caught in fog,turn your headlights on low beam, even in daytime. You'll see -- and be seen -- better. Don't use your high beams. light willbounce off the water droplets The that make up and reflect back at you. fog Use your defogger. In high humidity, even light buildup of moisture on a the inside of the glass willcut down on your already limited visibility. Run your windshield wipers washer occasionally. Moisture can buildup and on the outsideglass, and what seems to be fog may actuallybe moisture on the outside of your windshield. Treat dense fog as an emergency. Try to find a place to pull off the road. Of course you want to respect another's property, but you might need to put something between you and moving vehicles-- space, trees, telephone poles, a private driveway, anythingthat removes you from other traffic. If visibility isnear zero and must stop but are unsure you whether you are away from the road, turn your lightson, startyour hazard warning flashers, and sound your horn at intervals or when you hear approaching traffic. Pass other vehicles in fog only you can see far enough ahead pass if to safely. Even then, be prepared delay yourpass if you suspect the fog is to worse up ahead.If other vehicles try to pass you, make it easy for them.