Okla. Stat. tit. 69, § 69-3011: "Toll Expressway" and "municipality" defined

For the purposes of this act, the term "Toll Expressway" is

defined to mean any toll urban or rural expressway or expressways

which may consist of separate sections or segments separated by

intervening highway or street connections, and which may be laid out

wholly or partially within the corporate limits of any incorporated

city, and the cost of construction of which has or is to be paid for

by revenue bonds issued by a public trust. For the purposes of this

act, the word "municipality" includes a city, county or town.