The fee required to be deposited in parking meters is levied as a police regulation and inspection fee to cover the cost of providing parking spaces, parking meters and installation, and maintenance thereof, the cost of regulation and inspection, operation, control and use of the parking meter spaces and zones created for the regulation and control of traffic moving in and out of, and parking in, such parking spaces and zones created herein, for the regulation and control of traffic moving in and out of, and parking spaces and zones so created, and for the cost of any resultant traffic administration expenses. (1967 Code Sec. 17-93)