If it's a good map, you'll find your driveway, even in a blizzard. I'd hate to rely on that accuracy to stay on the road, though. That's the rub. You may wonder whether the GPS can accurately give your position during a blizzard. Garmin GPS, the industry leader in GPS technology, states you can.
Experience indicates so, too.
In 1998, Bill and Helen Thayer trekked the western Arctic on skis, following the 500,000-animal caribou herd. Icelanders make special vehicles and install GPSs for driving through snow blizzards.