I've thought about paving, but it's a quarter mile long so that's a lot of money. And most of the time enough of the gravel sticks up through what's left on the road to provide traction. I'd think if it were paved it would have to be kept clean or the ice issue would be worse.
I'm told by local road builders that putting salt on a gravel drive is a big no-no. They tell me it causes the top layer to stay unfrozen, over a frozen base, so it becomes undrivable, so the only solution is to remove the salted soil and rebuild the entire road. I've not tested that so don't know from personal experience.