((a)) On application of the owner of a lateral branch line of railroad, or of a shipper tendering interstate traffic for transportation, a rail carrier providing transportation subject to the jurisdiction of the Board under this part shall construct, maintain, and operate, on reasonable conditions, a switch connection to connect that branch line or private side track with its railroad and shall furnish cars to move that traffic to the best of its ability without discrimination in favor of or against the shipper when the connection—
((1)) is reasonably practicable;
((2)) can be made safely; and
((3)) will furnish sufficient business to justify its construction and maintenance.
((b)) If a rail carrier fails to install and operate a switch connection after application is made under subsection (a) of this section, the owner of the lateral branch line of railroad or the shipper may file a complaint with the Board under . The Board shall investigate the complaint and decide the safety, practicability, justification, and compensation to be paid for the connection. The Board may direct the rail carrier to comply with subsection (a) of this section only after a full hearing.