Rates, fees, and charges for public transportation service rendered by the authority from any of its transit systems shall be fixed and revised to provide funds that, when added to all other revenues, including tax proceeds, anticipated to be received by the authority, will be at least sufficient:
(1) To pay the cost of operating, maintaining, repairing, replacing, extending, and improving the systems from which the services are rendered.
(2) To pay the principal and the interest on all bonds issued and obligations assumed by the authority, that are payable out of the revenues derived from operation of those systems, as the principal and interest become due and payable.
(3) To create and maintain reserve for the foregoing purposes or as may be provided in any mortgage and deed of trust or trust indenture executed by the authority or in any resolutions of the board authorizing the issuance of bonds, the assumption of any obligation, or the acquisition of any system.
(4) To make annual payments, if any, to the United States of America or any agency or instrumentality, the state, municipalities, counties, departments, authorities, agencies, and political subdivisions of the state and any public corporations organized under the laws of the state as the authority may have contracted to make.