§ 408. Administration. The administrator of the agreement for this state shall have the power to make such exemptions from the coverage of the agreement as may be appropriate and to make such changes in methods for the reporting of any information required to be furnished to this state pursuant to the agreement as, in his judgment, shall be suitable; provided that any such exemptions or changes shall not be contrary to the purpose set forth in article one of the agreement and shall be made in order to permit the continuance of uniformity of practice among the contracting states with respect to busses. Any such exemption or change shall be made by rule or regulation and shall not be effective unless made by the same procedure required for other rules and regulations of his department. If not otherwise covered by statute, the administrator may make provision for publication of the rules and regulations contemplated by this section.