All signs, barricades, signals, markings and devices not inconsistent with this act placed or erected by authority of a public body or official having jurisdiction, for the purpose of regulating, warning or guiding traffic. Laws 1961, p. 318, § 1-139.
Official traffic - Control devices
47 O.S. § 1-139, under Title 47 — Motor Vehicles.
47 O.S. § 1-139