70 ILCS 3615/2.02
Any purchase of service agreement with a transportation agency which is not a public body shall be upon terms and conditions which will allow the transportation agency to receive for the public transportation provided pursuant to the agreement net income, after reasonable deductions for depreciation and other proper and necessary reserves, equal to an amount which is a reasonable return upon the value of such portion of the transportation agency's property as is used and useful in rendering such transportation service. This paragraph shall be construed in a manner consistent with the principles applicable to such a transportation agency in rate proceedings under the Public Utilities Act . This paragraph shall not be construed to provide for the funding of reserves or guarantee that such a transportation agency shall in fact receive any return. A Service Board shall, within 180 days after receiving a written request from a transportation agency which is not a public body, tender and offer to enter into with such transportation agency a purchase of service agreement that is in conformity with this Act and that covers the public transportation services by rail (other than experimental or demonstration services) which such agency is providing at the time of such request and which services either were in operation for at least one year immediately preceding the effective date of this Act or were in operation pursuant to a purchase of service or grant agreement with the Authority or Service Board. No such tender by a Service Board need be made before April 1, 1975. The first purchase of service agreement so requested shall not, unless the parties agree otherwise, become effective prior to June 30, 1975. If, following such a request and tender, a Service Board and the transportation agency do not agree upon the amount of compensation to be provided to the agency by the Service Board under the purchase of service agreement or fares and charges under the purchase of service agreement, either of them may submit such unresolved issues to the Illinois Commerce Commission for determination. The Commission shall determine the unresolved issues in conformity with this Act. The Commission's determination shall be set forth in writing, together with such terms as are agreed by the parties and any other unresolved terms as tendered by the Service Board, in a single document which shall constitute the entire purchase of service agreement between the Service Board and the transportation agency, which agreement, in the absence of contrary agreement by the parties, shall be for a term of 3 years effective as of July 1, 1975, or, if the agreement is requested to succeed a currently effective or recently expired purchase of service agreement between the parties, as of the date of such expiration. The decision of the Commission shall be binding upon the Service Board and the transportation agency, subject to judicial review as provided in the Public Utilities Act , but the parties may at any time mutually amend or terminate a purchase of service agreement. Prompt settlement between the parties shall be made of any sums owing under the terms of the purchase of service agreement so established for public transportation services performed on and after the effective date of any such agreement. If the Authority reduces the amount of operating subsidy available to a Service Board under the provisions of Section 4.09 or Section 4.11, the Service Board shall, from those funds available to it under Section 4.02, first discharge its financial obligations under the terms of a purchase of service contract to any transportation agency which is not a public body, unless such transportation agency has failed to take any action requested by the Service Board, which under the terms of the purchase of service contract the Service Board can require the transportation agency to take, which would have the effect of reducing the financial obligation of the Service Board to the transportation agency. The provisions of this paragraph (c) shall not preclude a Service Board and a transportation agency from otherwise entering into a purchase of service or grant agreement in conformity with this Act or an agreement for the Authority or a Service Board to purchase or a Service Board to operate that agency's public transportation facilities, and shall not limit the exercise of the right of eminent domain by the Authority pursuant to this Act.
70 ILCS 3615/2.02