National Forest Motor Vehicle Use Maps
The Motor Vehicle Use Map (MVUM) displays the designated network of roads and trails for public motor vehicle use. The MVUM is your tool for knowing where you can legally operate your motor vehicle.
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There are three designated types of state-designated ORV trails, including: Motorcycle-only trails maintained at a 24″ width. ORV trails maintained at a 50″ width. ORV routes maintained at a minimum 72″ width or greater. See the MI DNR website for more information.