A railroad must comply with the directions of a shipper to the same extent that an employee must comply with those of his employer. If the directions are conflicting, the railroad must comply with those of the consignor on all matters except delivery of the freight. On delivery he must comply with directions of the consignee unless the consignor has specially forbidden the railroad to receive orders from the consignee inconsistent with his own.
SDCL 49-16A-28