The city council shall make all necessary rules and regulations governing the use, operation, and control of the improvements as provided in sections 16-801 to 16-811. In the exercise of the grant of power as provided in sections 16-801 to 16-811, the city of the first class may make contracts with departments of the city, or others, if such contracts are necessary and needed for the payment of the revenue bonds authorized in section 16-803 and for the successful operation of the parking facilities. The city council shall also establish and maintain equitable rates or charges for such services sufficient in amount to pay for the cost of operation, repair, and upkeep of the facilities to be purchased, acquired, or leased, and the principal of and interest on any revenue bonds issued pursuant to sections 16-801 to 16-811. The city council may also make any other agreements with the purchasers of the bonds for the security of the issuing city and the purchasers of such bonds not in contravention with sections 16-801 to 16-811.