Even if you have all-wheel drive, reduce your speed about 10 miles per hour below the speed limit. If it still feels iffy, cut back another five miles per hour until you're comfortable.
Beware of black ice.
It’s nearly impossible to see this crystal-clear glaze, but you can spot it when your headlights reflect off the road at night. It tends to form on bridges, which trap the cold; in the shadows of tall buildings, where the sun can't hit it; and at intersections, due to drains. That's why, in bad weather, you should slow down a couple of hundred feet before stop signs and lights.
On the highway, leave about 100 yards (about the length of a football field) between you and the car ahead of you to give you plenty of room to stop in case that person brakes suddenly. Still, it's close enough to use his headlights to see what's up ahead.
Don’t brake during a turn.
To avoid a spin-out, gradually start turning the steering wheel and feathering the brakes lightly before the curve. Then coast through the turn with your foot off the brake and off the gas, so as not to gain speed. When you have your foot on the brake, the wheels stop turning. That's when the car loses control and goes in any direction that momentum decides to take it, like a toboggan.
Turn into a skid.
Remain calm, take your foot off the brake and the gas pedals, and turn the car in the direction the car is skidding. For example, if you're sliding to the left, gently turn the steering wheel to the left. This cancels out the skid. The car corrects itself and goes straight. If all else fails and you have the option to do so safely, leave the road and drive the car into a snow bank.