In Michigan, there is no specific state law that explicitly forbids a person from standing in a parking spot to "save" it, but the practice is generally considered illegal under broader "pedestrian in the roadway" and "disorderly conduct" ordinances. Most local municipalities (like Detroit, Grand Rapids, or Ann Arbor) have traffic codes that prohibit pedestrians from blocking or obstructing the flow of vehicular traffic. If a person stands in a spot and prevents a car from entering, they can be cited for interfering with a motor vehicle or creating a public nuisance. Furthermore, Michigan's "Basic Speed Law" and right-of-way rules favor the vehicle when it is operating in a designated driving or parking lane. While it might not always lead to a ticket unless a police officer is present, saving a spot by standing in it often leads to "road rage" incidents, which can result in criminal charges for assault or harassment. Practically speaking, if someone is already in the spot, it is safer to move on, but legally, the person standing there has no "right" to occupy a space designated for a motor vehicle.