1993 Pontiac Bonneville Owner's Manual - Page 171

Your Driving andthe Road Tips on Driving in Fog Everybody then has a better chance to avoid hitting the vehicleahead. A patch of dense fog may extend only Driving inFog, Mist andHaze for a few feet (meters) or for miles Fog can occur with high humidity or (kilometers); you can't really tell while heavy frost. It can be so mild that you you're in it. You can only treat the can see through it for several hundred situation with extreme care. feet (meters). Or it might be so thick that you can see only a few feet (meters) One common fog condition-sometimes called mist or ground fog-can happen ahead. It may come suddenly to an in weather that seems perfect, especially otherwise clear road. And it can be a at night or in the early morning in valley major hazard. and low, marshy areas. You can be When you drive into a fog patch, your suddenly enveloped in thick, wet haze visibility will be reduced quickly. The that may even coat your windshield. You biggest dangers are striking the vehicle can often spot these fog patches or mist ahead or being struck by the one layers with your headlights. But behind. Try to "read" the fog density sometimes they can be waiting for you down the road. If the vehicle ahead as you come over a hill or dip into a starts to become less clear or, at night, if shallow valley. Start your windshield the taillights are harder to see, the fog is wipers and washer to helpclear probably thickening. Slow down to give accumulated road dirt. Slow down traffic behind you a chance to slow carefully. down. m m . If you get caught in fog, turn your headlights on low beam, even in daytime. You'll see-and be seenbetter. Use your fog lights. Don't use your high beams. The light will bounce off the water droplets that make up fog and reflect back at you. Use your defogger. In high humidity, even a light buildup of moisture on the inside of the glass will cut down on your already limited visibility. Run your windshield wipers and washer occasionally. Moisture can build up on the outside glass, and what seems to be fog may actually be 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 1 0 7