Okla. Stat. tit. 47, § 1151.4

A. Medium-speed electrical vehicles shall be registered pursuant to the provisions of the Oklahoma Vehicle License and Registration Act. Service Oklahoma shall promulgate rules for the titling and registration of medium-speed electric vehicles. B. Medium-speed electrical vehicles which have been titled and registered pursuant to the provisions of the Oklahoma Vehicle License and Registration Act may be operated on the roadways of this state with a posted speed limit of forty-five (45) miles per hour or less; provided, however, medium-speed electrical vehicles shall not be permitted to travel upon any highway in this state which is a part of the National System of Interstate and Defense Highways and which otherwise meets or exceeds the National Highway Traffic Safety Administration regulations set forth in 49 C.F.R. 571.500. Operators of medium-speed electrical vehicles shall comply with all traffic regulations and rules of conduct for the operation of motor vehicles on the roadways of this state provided by law.