Make sure your vehicle is in proper working condition, especially check brakes, windshield wipers, the battery, tire inflation and tread, windshield wiper fluid level and antifreeze level. Clear all snow from your vehicle before you drive, especially from windows and around headlights and brake lights. The width of many streets is narrowed by piled-up snow that has been cleared from the streets. Be careful when approaching or passing other vehicles. Exercise caution if you have to pull off the road.
Snow can block the tail pipe causing engine exhaust to back up into the vehicle.
Also, vehicles easily can become stuck off the road. Don't race the engine and spin your wheels if you become stuck in the snow, it will only make the situation worse. Use some thing under the drive wheels to give you some traction, such as sand or kitty litter, and slowly try to move forward. If you become stuck in the snow in unfamiliar surroundings, stay with your vehicle until help arrives. Tie a bright cloth to your antenna to alert rescuers.