Mich. Comp. Laws § 247.321: Driveways, banners and parades on highways; definitions.

Sec. 1.

As used in this act:

"Driveway" means a driveway, lane, road or any other way providing vehicular access to or from the highway from or to property adjoining the highway but does not mean a city or village street or other highway covered by the provisions of Act No. 288 of the Public Acts of 1967, being sections 560.101 to 560.293 of the Compiled Laws of 1948.

"Highway" means a state trunk line highway or a county road including the entire right of way.

"Highway authority" means the department of state highways in the case of state trunk line highways, and the board of county road commissioners in the case of county roads.