Ala. Code § 37-2-133

Every railroad subject to the provisions of this division shall construct, maintain, and operate upon reasonable terms, a switch connection with such other railroad or with any private sidetrack which may be constructed to connect with its railroad, where such connection, in the judgment of the Public Service Commission, is reasonably practicable and can be put in with safety and will furnish sufficient business to justify the construction and maintenance of the same; and to furnish cars for the movement of such traffic to the best of its ability without discrimination in favor of or against any shipper. The Public Service Commission, upon the application of any other railroad, or of any shipper tendering freight traffic for transportation, made either to the commission or to said railroad company, may require them to comply with the provisions of this section.