If any article, section, subsection, sentence, clause, or phrase of 501 CMR 18.00 is for any reason held to be unconstitutional, contrary to statute, or in excess of the statutory authority of the Secretary of Public Safety and Security or otherwise inoperative, such decision shall not affect the validity of any other article, section, subsection, sentence, clause or phrase of 501 CMR 18.00.
501 CMR, § 18.09