(A) The license of any person, violating this chapter or permitting the same to be violated by any agent or driver, or who willfully makes a false statement in any application for a license, or who permits any license issued to him to be used in any manner, or who fails to operate the taxicab or causes the same to be inoperative for 30 days in any one calendar year, not authorized by this chapter, shall be subject to revocation by the mayor regardless of whether or not criminal proceedings shall have been instituted. The revocation shall take effect only after a hearing on the matter is conducted by the mayor. A written notice of the hearing shall be given at least 5 days prior thereto to the licensee personally or by leaving a copy at a place of business designated in the license therefor existing.
(B) As a preliminary to revocation, any license issued by the city may be suspended by the mayor. Any suspension shall be put into effect by serving a notice thereof upon the licensee personally or by leaving a copy at his place of business or as designated in the license. The notice shall specify the reason for suspension and the period of time, in no case exceeding 15 days, within which the conditions causing the suspension must be corrected and may state that unless the correction is made within the time the license will be revoked.
('68 Code, § 52.20)