ya, thats an adventure, especially if you get stuck behind someone who is going extreamly slow. the cars bunch up and you are stuck going 20mph for about 3-4 hours.
in the winter you don't hit the passes without, flares, blanket, lighter, water, food (basicly enough stuff to keep you alive for a day), thay are almost always fine but you never know when it can get bad fast and leave you stuck and alone for a while.
this time of year is fine though, usually the worst you will see is black ice. they keep them well cleared, but we don't salt the roads so always watch for ice.