Mich. Comp. Laws § 462.32: Unreasonable rate or practice; regulation by commission.

Sec. 32.

Whenever, after hearing and investigation as provided in this act, the commission shall find that any charge, regulation or practice affecting the transportation of passengers or property, or any service in connection therewith not herein specifically designated, is unreasonable or unjustly discriminatory, it shall have the power to regulate the same as provided in section 22 of this act.