I drove from little rock Ark. to McCamey Texas in a major ice storm two years ago, about 650-700 miles.
The first 450 were on freeway with about 3-6" of ROUGH ice/sand casserole resulting from ice layers, the big rigs busting it up, sand going in, more ice then more trucks, more sand and repeat. Man that surface was rougher than a preachers head on Monday morning. Had no idea it would be that rough. Beat the crap out of me.
Total white knuckle experience, driving 25-35 hours on end watching car after car end up in the ditch.
Didn't help being in a van at the time, one with no limited slip so essentially it was a ONE wheel drive.
Not very experienced on ice but figured it out pretty quickly; DO NOT DO ANYTHING QUICKLY OR YOU WILL BE A VICTIM OFYOUR OWN INERTIA,
It is as simple as that.
Almost every car I watched take a dive was due to too rapid of a lane change, acceleration or deceleration sometimes combined with too much confidence.
I shouldn't have been out there at all but a customer needed us badly.
Plus I got overtime 24/7 for almost a week due to the drive and the job so that was cool.