The best advice for driving foggy areas is delay your trip until conditions improve. However, this is some times not possible. Fog can reduce visibility to less than 50 meters. At 60 mph, it is only for half a second in front of you. It is necessary to do everything possible to improve your vision, and to warn other drivers of your intentions as soon as possible. Visibility It’s hard to notice the fog getting thicker, so visibility can be reduced without you knowing it. To improve your vision, use your wipers and defroster to minimize condensation on the windows….