Michigan Compiled Laws, Chapter 257. Motor Vehicles § 257.726

Sec. 726. (1) Subject to subsection (4), local authorities and county road commissions with respect to highways under their jurisdiction, except state trunk line highways, by ordinance or resolution, may do any of the following:

(2) Any prohibitions, limitations, or truck route designations established under subsection (1) shall be designated by appropriate signs placed on the highways or streets. The design and placement of the signs shall be consistent with the requirements of section 608.  1

(3) If a township has established a prohibition or limitation under subsection (1) on any county primary road that an adjoining township determines diverts traffic onto a border highway or street shared by the township and the adjoining township, the adjoining township may submit a written objection to the county road commission having jurisdiction over the county primary road, along with a copy to the township that established the prohibition or limitation, 60 days after the township approves the prohibition or limitation. The written objection shall explain how the prohibition or limitation diverts traffic onto the border highway or street shared by the township and the adjoining township. The county road commission shall then investigate the objection. The township and adjoining township shall cooperate with that investigation and negotiate in good faith to resolve the objection. If the objection is not resolved within 60 days after the township receives the copy of the written objection, the county road commission shall either approve or void the prohibition or limitation that is the subject of the objection within 60 days after the 60-day period described in this subsection, and the decision shall be final.As used in this subsection, “county primary road” means a highway or street designated as a county primary road under 1951 PA 51, MCL 247.671 to 247.675.  2

(4) An ordinance or resolution described in subsection (1)(a) does not apply to a vehicle that is used to transport agricultural products, farm machinery, farm supplies, or a combination of these items, to or from a farm or as necessary for agricultural production.

(5) A person who violates a prohibition, limitation, or truck route designation established under subsection (1) is responsible for a civil infraction.