Okla. Stat. tit. 19 § 868.6
The county planning commission shall make, adopt and may publish an official master plan of the county for the purpose of bringing about coordinated physical development in accordance with the present and future needs of the county. The master plan shall be developed so as to conserve the natural resources of the county, to insure efficient expenditure of public funds, and to promote the health, safety, convenience, prosperity and general welfare of the inhabitants. Such master plan may include, among other things, studies and recommendations relative to the location, character and extent of highways, railroads, bus, street car and other transportation routes, bridges, public buildings, schools, parks, parkways, airports, forests, wildlife refuges, dams and projects affecting conservation of natural resources. The master plan shall not limit the construction, maintenance or operation of public service facilities outside of the riding surface of county roads, streets, highways or section lines of companies regulated by the Oklahoma Corporation Commission, nor shall such master plan apply to or limit construction of telephone exchange buildings. The commission may adopt the master plan in whole or in part and subsequently amend or extend the adopted plan or portion thereof. Before the adoption, amendment or extension of the plan or portion thereof the commission shall hold at least one public hearing thereon. Such hearing may be adjourned from time to time. The adoption of the plan, or part thereof, shall be by resolution carried by not less than a majority vote of the full membership of the commission. After the adoption of the master plan, or part thereof, an attested copy shall be certified to the board of county commissioners, to the county clerk and to the clerk of such incorporated area covered by the plan.
Okla. Stat. tit. 19, § 868.6