Okla. Stat. tit. 47, § 1-149
A carrier of persons or property upon cars operated upon stationary rails.
Laws 1961, HB 556, p. 319, § 1-149, eff. September 1, 1961; Amended by Laws 2001, SB 539, c. 131, § 1, emerg. eff. July 1, 2001 (superseded document available).