Michigan Compiled Laws, Chapter 207. Taxation § 207.1132

Sec. 132. The department may assign qualified persons including persons who are not state police officers to supervise or operate permanent or portable weigh stations or other inspection points. A person assigned under this section may stop, inspect, and issue citations to operators of a commercial straight truck, a truck and trailer with a declared gross weight of 11,000 pounds or more, a marine vessel, or a bus, at a permanent or portable weigh station or other inspection point.