Mich. Comp. Laws § 257.44: “Private driveway” and “private road” defined.

Sec. 44.

"Private driveway" means any piece of privately owned and maintained property which is used for vehicular traffic, but is not open or normally used by the public.

"Private road" means a privately owned and maintained road, allowing access to more than 1 residence or place of business, which is normally open to the public and upon which persons other than the owners located thereon may also travel.