SDCL § 49-33-12: Powers of corporation--Rules and regulations--Rates--Discrimination prohibited.

Every corporation organized under this chapter shall have power to regulate the time and manner in which passengers and property shall be transported and the compensation to be paid therefor, but in so doing no preference, advantage, or monopoly shall be given to any person, company, or corporation doing business with it or doing business at more than one point along the line of its road.