Michigan Compiled Laws, Chapter 257. Motor Vehicles § 257.643

Sec. 643. (1) The operator of a motor vehicle shall not follow another vehicle more closely than is reasonable and prudent, having due regard for the speed of the vehicles and the traffic upon and the condition of the highway.

(2) Except as provided in subsection (4), a person shall not operate a motor vehicle with a gross weight, loaded or unloaded, in excess of 5,000 pounds outside the corporate limits of a city or village, within 500 feet of a like vehicle described in this subsection, moving in the same direction, except when overtaking and passing the vehicle.

(3) Except as provided in subsection (4), a distance of not less than 500 feet shall be maintained between 2 or more driven vehicles being delivered from 1 place to another.

(4) Subsections (2) and (3) do not apply to a vehicle in a platoon.

(5) A person who violates this section is responsible for a civil infraction.