Michigan Compiled Laws, Chapter 257. Motor Vehicles § 257.606

Sec. 606. (1) This chapter does not prevent a local authority with respect to streets or highways under the jurisdiction of the local authority and within the reasonable exercise of the police power from doing any of the following:

(2) All traffic regulations described in subsection (1) shall be based on standard and accepted engineering practices as specified in the Michigan manual on uniform traffic control devices.

(3) A local authority shall not erect or maintain a stop sign or traffic control device that requires the traffic on any state trunk line highway to stop before entering or crossing any intersecting highway unless approval in writing has been first obtained from the director of the state transportation department.

(4) An ordinance or regulation enacted under subsection (1)(a), (d), (e), (f), (g), (i), or (j) are not enforceable until signs giving notice of the local traffic regulations are posted upon or at the entrance to the highway or street or part of the highway or street affected, as may be most appropriate, and are sufficiently legible as to be seen by an ordinarily observant person. The posting of signs giving the notice is not required for a local ordinance that does not differ from the provisions of this act regulating the parking or standing of vehicles or for ordinances of general application throughout the jurisdiction of the municipalities enacting the ordinances that prohibit, limit, or restrict all night parking or parking during the early morning hours, if signs, approximately 3 feet by 4 feet, and sufficiently legible as to be seen by an ordinarily observant person, giving notice of these ordinances relating to all night parking or parking during the early morning hours, are posted on highways at the corporate limits of the municipality.

(5) A local authority, in providing by ordinance for the impounding of any motor vehicle parked contrary to a local ordinance, shall not require a bond or cash deposit by the owner of the motor vehicle in excess of $500.00 in order to recover the possession of the motor vehicle pending final adjudication of the case.