The Police Department shall keep a complete and public record of the issuance of each license under this chapter and all renewals, suspensions, and revocations thereof.  It shall be the duty of the Police Department to maintain a constant vigilance over all taxicabs for hire to see that they are kept in a condition of continued fitness for public use.  From time to time, or on complaint of any citizen, or at any time the Police Department may deem it necessary, taxicabs shall be inspected or caused to be inspected by the Police Department.
(`81 Code, § 119.18)  Penalty, see § 10.99