Okla. Stat. tit. 70 § 24-121
No vehicle shall be used by any school district within this state for the transportation of school children unless such vehicle be equipped with a safety belt or safety harness for the use of the driver of such vehicle. Such seat belt and safety harness shall conform to such standards as may be prescribed by 49 C.F.R., Part 571 , and the Board shall furnish a copy of such standards to the board of education of each school district. The driver of every vehicle used by a school district for the transportation of school children shall make use of such seat belts while in operation of the vehicle, and failure to do so shall be deemed to constitute a misdemeanor, and upon conviction therefor such driver shall be punished by a fine of not less than Twenty-five Dollars ($25.00) nor more than One Hundred Dollars ($100.00).
Okla. Stat. tit. 70, § 24-121