SDCL § 49-16A-37: Interchange facilities required--Discrimination between connecting roads prohibited--Switching and transferring cars.

All railroads subject to this chapter shall, according to their respective powers, afford all reasonable, proper, and equal facilities for the interchange of traffic between their respective roads, and for the receiving, forwarding, and switching of cars and the receiving, forwarding, and delivering of freight to and from their several roads and to and from other roads and places connected therewith, and shall not discriminate in their accommodations, rates, and charges between connecting roads. Each railroad is required to switch and transfer cars for another for the purpose of being loaded or unloaded.