ABSTRACT
Few inventions can have influenced relations between the police and the public more than that of the internal combustion engine. The image of the policeman has changed from that of a friend and protector of all but a small criminal minority, to that of a regulator and supervisor who is in close contact with all who use the roads, whether as drivers, passengers, or pedestrians; and in this role he has to enforce a law that is not regarded with much respect or sympathy by a substantial number of those whom it affects.
