Wear your seat belt!
Even though wearing your seat belt should already be a no-brainer at all times, during the winter it's even more critical. An alarming number of road ice fatalities occur with minor accidents where the vehicle occupants were not wearing seat belts.
Pay attention to the weather.
Make the weather forecast part of your daily routine during the winter. Awareness of conditions will help you be more prepared.
Go easy on your brakes.
Brake application is a common trigger of slides that result in a loss of vehicle control. ABS (antilock brakes) do not work well on ice and snow, and often will lock up your wheels regardless. Sliding wheels are uncontrollable, that is, steering input will not change the vehicle's direction if the wheels are sliding.
Turn into a slide.
If you're fishtailing or sliding, it usually means you are going too fast. Reduce your speed so you won't need to worry about this! Most high-speed slides are difficult to correct successfully. If you're caught off guard and begin sliding, turn your wheels in the direction that the rear of your car is sliding. It helps to look with your eyes where you want the car to go, and turn the steering wheel in that direction. It is easy to steer too far, causing the car to slide in the other direction. If this happens (called overcorrecting), you'll need to turn in the opposite direction.
Icy road accidents happen in multiples
Your own accident is sometimes not the greatest threat to you - additional out-of-control vehicles often are.
Don't stop for accidents or stranded vehicles along an icy roadway.
Being a Good Samaritan is a noble thing, but on an icy road, it can cause more problems than it solves. Parking on the side of an icy highway can cause passing drivers to brake and lose control, putting the lives of everyone involved in danger. Unless the stranded driver is in immediate danger, the best thing you can do is contact the authorities (call 911), who are equipped to safely block the road or divert traffic while a tow truck can do the job properly.
Avoid hills or other dangerous roads during icy conditions.
The laws of physics are unforgiving! If you attempt to tackle a steep enough incline, there is nothing you can do to stop gravity from taking its toll.