1. A. This act, Section 151 et seq. of this title, shall not apply to and shall not be so construed as prohibiting the purchase and use of trucks or pickups by state departments, institutions or agencies when such trucks or pickups are necessary for the performance of their official duties, provided that all such trucks and pickups owned and operated by the Department of Transportation shall be painted either yellow or white, and all state-owned motor vehicles, except as otherwise provided for by law, shall be plainly marked, in letters not less than two (2) inches in height, with the words "State of Oklahoma" followed by the name of the appropriate department, institution or agency operating such vehicle.
2. B. The provisions of this section shall not be construed to permit the purchase of any motor vehicle of ten thousand (10,000) pounds or less gross vehicle weight.
3. C. All acquisitions of any motor vehicle of ten thousand (10,000) pounds or less gross vehicle weight shall be approved by the Director of the Department of Central Services as provided for in Section 78 of Title 74 of the Oklahoma Statutes.

Laws 1941, p. 202, § 5, emerg. eff. May 22, 1941; Amended by Laws 1988, c. 305, § 25, operative July 1, 1988; Amended by Laws 1994, c. 116, § 1, eff. July 1, 1994.