Rule 2. Motor vehicles which are subject to inspection pursuant to section 715a of the act, which are, in whole or in part, school bus chrome yellow or any color commonly referred to as yellow, and which are engaged in the transportation of pupils shall comply with all department of education requirements for school buses set forth in R 340.1201 to R 340.1216; except that vehicles which are manufactured before the effective date of these rules and which have a rated seating capacity of 60 or more passengers are not required to be equipped with an air brake system.
Mich. Admin. Code R. 257.952