I think they were referring to a road that is not plowed all winter and in the spring they send in the bulldozer to clear an initial path until a snowblower can handle it.
>The first bulldozers will push and carry the snow forward, to areas where depths are lower and it can be pushed aside or dumped. Backhoes are used to help widen the road. When the bulldozers have come within six feet or less of the road, the rotary blowers can begin their work, and help to at last reveal the long buried asphalt.
>The first bulldozers will push and carry the snow forward, to areas where depths are lower and it can be pushed aside or dumped. Backhoes are used to help widen the road. When the bulldozers have come within six feet or less of the road, the rotary blowers can begin their work, and help to at last reveal the long buried asphalt.