The most dangerous time to be driving when poor weather conditions exist is when the rain or snow first begins. This is because the oil and dust on the road hasn't yet had a chance to be washed away, so the pavement is at its most slippery.

Slow down, and turn on your windshield wipers, headlights, defroster, and radio. Well, radio optional.

If the weather's really bad—and you can't see more than 100 feet ahead of you—reduce your speed to 30mph or even less, depending on the road conditions and heaviness of traffic. You now have to watch out for snowmen as well as pedestrians, and snowmen move much more slowly. Plus, their line of vision's often obscured by a carrot.

If you live in a particularly snowy climate, keep chains in your trunk and know how to use 'em. These are to be fitted to your tires, not to keep prisoners secured in your dungeon. But who are we to judge?