Nothing motorized is allowed
"The trails are for non-motorized use only, including bicycling, walking, running, skating" http://ozarkgreenways.org/resources/rules-of-the-trails/ However, Chadwick, SE of Ozark, has 80 miles of trails for motorized use. https://www.fs.usda.gov/recarea/mtnf/recarea/?recid=21762
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