Okla. Stat. tit. 19 § 868.9
Whenever a plan for major highways has been adopted and filed by the county planning commission, the board of county commissioners, upon recommendation of the county planning commission, is hereby authorized and empowered to establish, regulate and limit, and to change and amend, building or set-back regulations on such major highways, and to prohibit any new building's being located within such building or set-back lines outside the corporate limits of any city or town. In establishing such building line, the board of county commissioners shall take into consideration the present stage of development along such highways, including the type of buildings and nature of their use, as well as their number and location, the present width of such highways and type of construction, the amount of traffic using such highways, and probable future needs to protect safety and provide adequate transportation along such highways in view of the trend of development of residential, commercial and industrial areas served by such highways.
Regulations authorized by this section shall not be adopted, changed or amended by the board of county commissioners until a public hearing has been held thereon by the county planning commission.
Okla. Stat. tit. 19, § 868.9