It shall be the duty of the Director of the Department of Public Safety, and he shall have power to do all that is necessary to administer and enforce:
(1) All laws contained in this title, as the same may now or hereafter be amended;
(2) All other laws relating or pertaining to the operation or movement of vehicles on the public highways of this state;
(3) Such other laws as the Department of Public Safety has heretofore administered and enforced.