Why would material be spread on a bare highway after a snowstorm is over?
The projected roadway temperatures have a lot to do with the final treatment of a road. After plowing operations have finished and a roadway is left in the so-called “black and wet” condition, there is sometimes the danger of the water on the road re-freezing. This post-storm treatment of roads is typically needed at night – since temperature drops can be more dramatic than when the sun is shining.
