Okla. Stat. tit. 21, § 21-1365: Trespassing on railway trains a misdemeanor

Any person, other than a railway employee in the discharge of

his duty, who, without authority from the conductor of the train,

rides, or attempts to ride, on top of any car, coach, engine or

tender, on any railroad in this state, or on the drawheads between

the cars, or under cars or trussrods or trucks, or in any freight

car, or on the platform of any baggage car, express car, or mail

car, or any train in this state, shall be guilty of a misdemeanor.