Okla. Stat. tit. 47, § 47-13-101: Vehicles without required equipment or in unsafe

condition.

No person shall drive or cause to be moved on any highway any

motor vehicle, trailer, semitrailer or pole trailer, or any

combination of vehicles, unless the equipment upon any and every

said vehicle is in good working order and adjustment as required in

this act and said vehicle is in such safe mechanical condition as

not to endanger the driver or occupant or any person upon the

highway.