Okla. Stat. tit. 47, § 40-104
No person shall operate any motorcycle or any motor scooter at a speed greater than the speed limit legally posted; provided, however, in no event nor at any time may an operator under the age of sixteen (16) years operate a motorcycle or motor scooter at a speed greater than thirty-five (35) miles per hour.
Laws 1967, c. 140, § 2, emerg. eff. April 27, 1967.