Michigan Compiled Laws, Chapter 257. Motor Vehicles § 257.629c

Sec. 629c. (1) Notwithstanding sections 320a and 907,  1 a person who is determined responsible or responsible “with explanation” for a civil infraction for violating the maximum speed limit on a limited access freeway or part of a limited access freeway upon which the maximum speed limit is 55 miles per hour or more shall be ordered by the court to pay a minimum fine and shall have points entered on his or her driving record by the secretary of state only according to the following schedule, except as otherwise provided in subsections (2) and (3):

(2) Subsection (1) does not apply to a person operating a vehicle or vehicle combination for which the maximum rate of speed is established pursuant to section 627(5) to (7). 2

(3) For a violation of a maximum speed limit on a limited access freeway by a person operating a vehicle or vehicle combination described in subsection (2), points shall be assessed under section 320a and fines shall be assessed under section 907.