The provisions of this subchapter are applicable to areas within 1,000 feet of the nearest edge of the right-of-way if they are visible from the main traveled way. Highways which are controlled for the purposes of this subchapter are the Federal-aid Primary System and Interstate Systems regardless of whether Federal funds were utilized in their construction. Turnpikes which are incorporated in the Federal-aid Primary or Interstate Systems are controlled highways.
Okla. Admin. Code § 730:35-3-2