(A) The City Council may at any time after a public hearing revoke any certificate issued by authority of this subchapter for any one, or more, of the following causes.
(1) Failure to operate the taxicabs specified in the certificate in such a manner as to serve the public adequately and efficiently.
(2) Failure to maintain motor equipment in good repair.
(3) Failure to carry liability insurance or bond as required by ordinance.
(4) Failure to pay to the city the taxes or license fee for each taxicab, imposed upon the taxicabs.
(5) Repeated and persistent violation by the taxicab drivers of traffic and safety ordinances, or state laws relating to alcoholic beverages or prostitution.
(6) Failure to report accidents.
(7) Wilful failure to comply with any provision of this chapter or ordinances or state laws relating to the operation of taxicabs.
(B) No certificate shall be revoked until the owner has had at least five days' notice by personal service or registered mail of the charges against him and of the time and place of the hearing. If, after the hearing, it is found that the owner is guilty of one or more of the offenses listed in division (A) above, Council shall have the power to revoke the certificate, or to condition a revocation upon compliance with its order within any time fixed by it.
('58 Code, § 18-10)