Okla. Stat. tit. 47, § 12-414
All such safety belts or safety shoulder harnesses shall be of a type and shall be installed in a manner approved by the Department of Public Safety. The Department shall establish specifications and requirements for approved types of safety belts and safety shoulder harnesses and attachments thereto. The Department shall accept, as approved, all safety seat belt and safety shoulder harness installations and the belts, harnesses and anchors meeting the society of automotive engineers' specifications.
Laws 1965, SB 15, c. 86, § 2, emerg. eff. May 5, 1965.