In Michigan, it is legal to ride on all sidewalks, unless the local municipality has specifically prohibited it (such as Royal Oak). In such a case, the ban must be posted with signs, otherwise it is not enforceable.
MICHIGAN VEHICLE CODE (EXCERPT)
Act 300 of 1949
257.660c Operation of bicycle upon sidewalk or pedestrian crosswalk.
(1) An individual operating a bicycle upon a sidewalk or a pedestrian crosswalk shall yield the right-of-way to pedestrians and shall give an audible signal before overtaking and passing a pedestrian.
(2) An individual shall not operate a bicycle upon a sidewalk or a pedestrian crosswalk if that operation is prohibited by an official traffic control device.
(3) An individual lawfully operating a bicycle upon a sidewalk or a pedestrian crosswalk has all of the rights and responsibilities applicable to a pedestrian using that sidewalk or crosswalk.
History: Add. 2006, Act 339, Imd. Eff. Aug. 15, 2006