Okla. Stat. tit. 47, § 47-11-308: One-way roads and circular intersections

A. The Transportation Commission or local authorities, within

their respective jurisdictions, may designate any street or highway

or any separate roadway under their respective jurisdictions for

one-way traffic and shall erect appropriate signs giving notice

thereof.

B. Upon a roadway designated and signposted for one-way

traffic, a vehicle shall be driven only in the direction designated.

C. A vehicle passing around the central island of a circular

intersection shall be driven counterclockwise around such islands.