1993 Cadillac Seville Owner's Manual - Page 210

DRIVING IN FOG, MISTAND HAZE Fog can occur with humidity or heavy frost. Itcan be so mild that high you can see through it for several hundred feet (meters). might be Or it so thick that you can see only a few (meters) ahead. It come feet may suddenly to an otherwise clear road. it can be a major hazard. And When you drive into a fog patch, your visibility be reduced quickly. will The biggest dangersare striking the vehicle aheador being struckby the one behind. Try to "read" the fog density downthe road. If the vehicle ahead starts to become less clear at night, if the taillights are harder to or, see, the fog probably thickening. Slow down give traffic behind you' a is to chance to slow down. Everybodythen has a better chance to avoid hitting the vehicle ahead. A patch of dense fogmay extend only for afew feet (meters) or for miles in (kilometers); you can't really tell while you're it. You can onlytreat the situation with extreme care. One common fog condition sometimes called mist ground fog-- can -or at happen in weather that seems perfect, especially night or in the early morning in valley and low, marshy areas. can be suddenly enveloped You in thick, wet haze may even coat your windshield. can often spot that You these fog patches mist layers with your headlights. But sometimes they or can be waiting foryou as you come over a or dip intoa shallow valley. hill 196