Michigan Compiled Laws, Chapter 600. Revised Judicature Act of 1961 § 600.8392

Sec. 8392. (1) Upon the approval of the governing body of a district control unit, the district court may establish within the court a state civil infraction bureau. The state civil infraction bureau may utilize clerks or other personnel of the district court to accept, as authorized by the judges of the district, admissions for civil infractions under chapter 88,  1 and to collect civil fines and costs as prescribed by the judges of the district. The chief or only judge of the district, subject to the supervision of the supreme court, has authority over the state civil infraction bureau personnel and shall determine the location and number of state civil infraction bureau offices. Appeals by leave of the court may be taken from the state civil infraction bureau to the district court. Appeals shall be taken within 7 days after the entry of the civil infraction admission and shall be heard de novo.

(2) A state civil infraction bureau may be combined with a traffic bureau.