Mich. Comp. Laws § 479.19: Injunctive relief.

Sec. 19.

Injunction. Upon the violation of any provision of this act or upon the violation of any rule, regulation, or order of the commission, any judge of the circuit court of any county where such violation occurs shall have the power to restrain and enjoin the person from further violating any of the said rules, regulations, and orders. Such injunctive relief may be granted upon the application of the commission, the attorney general, the prosecuting attorney of any county, or any person, or any mercantile, agricultural, or manufacturing society or other organization, or any body politic or municipal organization, or any motor carrier aggrieved. No bond shall be required when such injunctive relief is sought upon the application of the commission, the attorney general, or the prosecuting attorney of any county.