Please keep in mind, under the Highway Traffic Act, Chap. H.8.181 cites the following "no person shall deposit snow or ice on a roadway without permission in writing to do so from the Ministry or the road authority responsible for the maintenance of the road. R.S.O 1980, c.198, s.157". In simple words: do not push snow across the road; it is illegal!
Nov 09 2017