Jasmy wrote:
Then take your foot off of the accelerator...or in case of a manual, downshift! Brakes are a BIG no no on ice! Better yet...just don't go out in it unless absolutely postively neccessary!!
If you absolutely must slow down on ice, use your brakes. Downshifting on ice (or anything else slippery) is generally a bad idea unless you are certain of what you're doing, and are good at it. Even then...why risk it? Braking is almost always the better choice.
1) Your brakes apply even pressure to all 4 wheels. Engine braking only applies to the drive axle. And even then, it may not apply evenly between the two wheels on said axle due to the differential.
2) It's much harder to precisely control engine braking than it is to control normal wheel braking.
3) If you don't perform this very smoothly, the drive axle is going to experience a sudden and significant change in applied forces. Sudden changes on ice = bad. More specifically, the axle is likely to lose traction, at least partially. Especially with a front-wheel drive vehicle (most non-sports cars), this is very bad because loss of traction on the drive axle = loss of steering.
4) Putting 3) and 1) together, this is a recipe for winding up ass-first no matter which axle is the drive axle.
On the whole, Corolinth has the right of it. Newton's laws of motion > *. Driving on ice really boils down to this:
1) Whenever possible, do nothing! Don't brake, don't accelerate, don't change directions. You're on a (nearly) frictionless surface. Your car is going to try to maintain its present velocity (same speed, same direction) whether you like it or not. Hitting a patch of ice is not, in and of itself, a good reason to apply the brakes. If your car is already going where you want it to, there is no good reason to do that. Only bad can come of it.
2) If you need to alter your car's velocity, be it steering, slowing, or speeding up, do so gradually.
3) If you can't do it gradually, the odds are good that you've already done something wrong! Granted, if a car suddenly spins out and crosses the median into oncoming traffic, then that's different. But generally speaking, this only happens because either you were going too fast to begin with, you weren't paying attention to the road/vehicles ahead of you, or you were following someone too closely on ice.