The board of county commissioners shall cause each piece of county-owned, rented or leased road machinery and equipment, and each automobile and truck, to be marked in accordance with the provisions of this section. County-owned automobiles, trucks, road machinery and equipment shall be conspicuously and legibly marked PROPERTY OF (name of county) COUNTY, and leased automobiles, trucks, road machinery and equipment shall be conspicuously and legibly marked LEASED BY (name of county) COUNTY, on each side, in upper case letters, on a background of sharply contrasting color.
Okla. Stat. tit. 69, § 645