226.1170.  Ozark Highlands Spirits Region, markings and informational signs. — The department of transportation, in consultation with the Ozark Highland Distillers Guild, shall erect and maintain suitable markings and informational signs designating the Ozark Highlands Spirits Region in accordance with the map produced pursuant to subsection 4 of section 311.028.  Signs shall be located along highways approaching or entering the region, with the costs to be paid by private donation.