Living in Edmonton for 21 years, the cold is frigid but not unbearable. The air in Edmonton is relatively dry so the cold doesn't chill you to the bone like in more humid places like Toronto. The main arterial roads are plowed immediately after snowfalls, and the bus collector route are plowed within 72 hours so the city is manageable for getting around. I'd recommend getting a vehicle with all wheel drive if possible. It's not mandatory though as the roads are plowed. This is actually the first year I am driving a 4 wheel drive vehicle. Most people drive about the same speed as they do in the summertime. Make sure you allow your vehicle to idle for about 5 minutes after starting to ensure it runs smoothly when its below -10C. Also plugging makes starting up a lot easier if it is possible. Otherwise just use common sense when driving, maintain a safe distance and make sure that you have enough gas so that you aren't stranded (At least a 1/4 tank). There is a lot to do indoors in Edmonton so enjoy.