Okla. Stat. tit. 63, § 63-1-1016A: Procedure for use of public restrooms

All restrooms located within buildings in the State of Oklahoma

built with public funds and which are accessible from corridors

intended for general public travel, and which are constructed for

public use, shall be available to the general public for their

inspection and use, unless public restrooms are available on the

same floor of said building. Said public restrooms shall be clearly

labeled by signs designating the same as public restrooms. The

provisions of this act shall not apply to public buildings used as

educational institutions.