A. For the purchasing, leasing, installing, repairing, maintaining, operating, removing, regulating and policing of parking meters in this city, and for the payment of any and all expenses relating or incidental thereto;

B. For the purchasing, leasing, acquiring, improving, operating and maintaining of off-street parking facilities in this city;

C. For the installation and maintenance of traffic-control devices and signals;

D. For the painting and marking of streets and curbs required for the direction of traffic and parking of motor vehicles;

E. For the proper regulation, control and inspection of parking and traffic upon the public streets;

F. To be pledged as security for the payment of principal of and interest on off-street parking revenue bonds issued by this city, of any parking district organized within this city. (Prior code § 3217)