Okla. Stat. tit. 47, § 11-1105
No person shall open the door of a motor vehicle on the side available to moving traffic unless and until it is reasonably safe to do so, nor shall any person leave a door open on the side of a vehicle available to moving traffic for a period of time longer than necessary to load or unload passengers.
Laws 1961, HB 556, p. 389, § 11-1105, eff. September 1, 1961.