The Mayor is hereby authorized to make such rules and regulations governing the issuance of taxicab and taxicab drivers' licenses or any other matter under the Mayor's supervision and control, as are reasonable and necessary and not inconsistent with the provisions of this chapter. The Mayor shall have the authority to act upon, make findings upon and grant, deny, suspend or revoke taxicab and taxicab drivers' licenses. The Mayor shall also have the authority to place a taxicab owner or driver on probation.