Mich. Comp. Laws § 750.377c

Sec. 377c. (1) If a person intentionally damages, destroys, or alters a school bus without the permission of the entity that owns that school bus and that damage, destruction, or alteration creates a health or safety hazard to any individual occupying that school bus or who may occupy that school bus, the person is guilty of a felony punishable by imprisonment for not more than 5 years, or a fine of not more than $5,000.00, or both. (2) As used in this section, "school bus" means that term as defined in section 57 of the Michigan vehicle code, Act No. 300 of the Public Acts of 1949, being section 257.57 of the Michigan Compiled Laws. School bus includes a school transportation vehicle as that term is defined in section 57c of Act No. 300 of the Public Acts of 1949, being section 257.57c of the Michigan Compiled Laws, if that vehicle is clearly marked as a school transportation vehicle.