Watch the weather reports before making a long-distance drive or driving in isolated areas. If you cannot delay your trip, let others know your route, destination and estimated time of arrival.
Always make sure your vehicle is in peak operating condition before making the trip.
Keep at least half a tank of gasoline in your vehicle at all times.
Pack a cellular phone along with blankets, gloves, hats, food, water and medications.
If you become snow-bound, stay with your vehicle. It provides temporary shelter and makes it easier for rescuers to locate you. Don't try to walk in a severe storm. It's easy to lose sight of your vehicle in blowing snow and become lost.
Don't over exert yourself if you try to push or dig yourself out of the snow.
Tie a brightly colored cloth to the antenna or place a cloth at the top of a rolled up window to signal distress. At night, keep the dome light on if possible. It only uses a small amount of electricity and make it easier for rescuers to find you.
Make sure the exhaust pipe isn't clogged with snow, ice or mud. A blocked exhaust can cause carbon monoxide to leak into the passenger compartment with the engine running.
Use whatever is available to insulate your body from the cold. This could include floor mats, newspapers or paper maps.
If possible, run the engine and heater just long enough to remove the chill and conserve gasoline.