A city of the primary class is authorized to make all necessary rules and regulations governing the use, operation, and control of offstreet motor vehicle parking facilities constructed or acquired under sections 15-269 to 15-276. Such city shall establish and maintain equitable rates sufficient in amount to pay for the cost of the 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 15-269 to 15-276. The city 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 of sections 15-269 to 15-276.