Taggart & amylou, you don't have a clue.  It's each persons responsibility to equip their vehicle properly AND drive your vehicle according to the conditions!  That doesn't mean driving at the same speed on a road despite the road condition.  Many people just drive too damn fast when the road conditions are poor or even marginal.  Look at the number of ditch diver tracks along our roads...it's abysmal.  No amount of sand trucks or road personnel crews are going to offset the personal responsibility of each and every driver on Alaska roads.  If you don't pay attention to road conditions...then shame on you, if you do pay attention and then drive like a bat out of hell...then doubly shame on you.  I constantly see these idiots every time I'm on the road...slick road conditions...they just blast on by.  You "might" be able to stay out of trouble on slick roads at speed...but I guarantee you that you won't be able to stop or avoid an unanticipated obstruction (be it natural or otherwise)!