Okla. Stat. tit. 47, § 47-1-175: Through highway

Every highway or portion thereof on which vehicular traffic is

given preferential right of way, and at the entrances to which

vehicular traffic from intersecting highways is required by law to

yield right of way to vehicles on such through highway in obedience

to either a stop sign or a yield sign, when such signs are erected

as provided in this act.