One of the problems with this particular storm was that ice was forming on the windshield wipers, making it so that they didn't always have full contact with the windshield. The result, as you can see, is that part of the windshield becomes difficult to see out of. I saw some people pulled off on the side of the highway to get the ice off their windshield wipers, a dangerous endevour considering how many people were sliding off the road.