The snow has arrived, and the plows are out, so transit officials are once again warning motorists to steer clear of the road crews. This year a new technology developed at the University of Minnesota could help plow operators avoid accidents. John Scharfbillig is the field supervisor for highway maintenance for the Minnesota Department of Transportation. This morning he demonstrated the new technology for me out in Rogers, Minnesota, where one proto-type plow will hit the road this winter.