Michigan Compiled Laws, Chapter 257. Motor Vehicles § 257.1328

Sec. 28. (1) For the purpose of an investigation or proceeding under this act, the administrator or an officer designated by him may administer oaths or affirmations, and upon motion of the attorney general or upon the motion of a party to a proceeding, make application to the circuit court for Ingham county for a subpoena, and if in the judgment of the court there is reasonable grounds to believe a subpoena should be issued, the court shall issue a subpoena to compel the attendance of the designated person, take evidence, or require the production of any matter which is relevant to the investigation or proceeding before the administrator or other officer conducting a proceeding.

(2) Upon failure to obey a subpoena of the court or to answer questions propounded by the administrator or other officer conducting the investigation or proceeding, after reasonable notice to the persons affected thereby, an application may be made to the circuit court for Ingham county for an order compelling compliance. Failure to comply with the order of the court shall be punished as a contempt.