I just want to raise again the concerns that were expressed by the Canadian Bar Association and the Canadian Civil Liberties Association that this section may be unhelpful to the bill and it is likely to result in litigation, as the question of whether it violates section 8 of the charter in terms of unreasonable search and seizure would come into play.
Again, with caution, the use of roadside checkpoints would work. I have lived mostly in rural areas over my life—I haven't lived in big cities—and I have seen lots of roadside checkpoints in rural areas. They are also very effective.