220 ILCS 5/15-507

(a) Establishment by carriers. Two or more common carriers by pipeline may establish through routes and joint rates, provided that the rates, divisions, and practices relating thereto are just, reasonable, and not discriminatory. (b) Establishment by the Commission. The Commission may, on its own motion, petition, or complaint, where 2 or more carriers by pipeline have failed to establish through routes, joint rates, divisions, and practices relating thereto, establish such routes, rates, divisions, and practices. The Commission shall take this action only after notice and a hearing to consider whether the proposed routes, rates, divisions, and practices are just, reasonable, and not discriminatory, whether a carrier has a reasonable objection to establishment of the routes, rates, divisions, and practices, and whether the objections can be satisfied by imposing reasonable terms and conditions on the application of the routes, rates, divisions, and practices.