When shipments of freight transported between different points within this state are required to be carried by two or more railroads operating connecting lines, such railroads shall transport the same at reasonable through rates and shall at all times give the same facilities to intrastate traffic as they give to interstate traffic over their lines.

Source: SDC 1939, § 52.0221; SDCL, § 49-12-4; SL 1980, ch 322, § 40.