I got to watch a number of cars whose drivers clearly didn't know how to handle snow yesterday. A situation would develop where one car would get stuck on the hill, spin its wheels furiously for a time before giving up. Then the car behind would decide not to wait any more and try to pass, only to lose traction itself and get stuck on the wrong side of the road facing partly sideways. From there it was just a question of which one would move first, because if either suddenly lurched in the snow it would hit the other.
Quite a few cars gave up their attempt to climb the hill and instead attempted to turn around and descend the hill. One person didn't even attempt to turn around, they just backed down the hill. At least they managed to do most of it without going sideways.
With the combination of people doing that and the odd idiot who thought he could still do 50mph despite the conditions, presumably because he had four wheel drive, I'm still amazed nobody met in the middle at speed.