Michigan Compiled Laws, Chapters 475 to 479 Motor Carrier Act § 479.12

Sec. 12.IMPOUNDING. In order to prevent continued unlawful operation over the highways, the commission may direct the impounding of any motor vehicle of any motor carrier who fails or refuses to comply with all applicable law, the provisions of this act, and any lawful rule or regulation or order of the commission. Any inspector or any peace officer shall be empowered, upon an order of the commission, to impound such vehicles at the expense of the owner. Such vehicles may be released only upon order of the commission and payment by the owner of the reasonable impounding expenses.