Fog occurs when 1) humidity goes up and 2) temperatures go down.
Plan ahead: if it's been rainy, and temperatures drop overnight, you
are likely to encounter fog on your way to work. Be particularly
aware of low-lying areas, canyons, creeks and wetlands.
The number one goal when driving in fog is to maximize your
visibility to others, and to decrease the amount of glare
coming at you. Make sure your headlights are on low beam; the
light from the high beams will reflect back to you and
minimize your visibility. If you have fog lights, don't be
shy about using them. Remember that it is never legal to
drive with just your parking lights on. Use your windshield
wipers to eliminate the glare from oncoming traffic. Increased
humidity means increased condensation inside your vehicle.
Leave yourself enough time to thoroughly defrost the front and
rear windows.
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