Okla. Stat. tit. 47, § 47-1-126: Intersection

(a) The area embraced within the prolongation or connection of

the lateral curb lines, or, if none, then the lateral boundary lines

of the roadways of two highways which join one another at, or

approximately at, right angles, or the area within which vehicles

traveling upon different highways joining at any other angle may

come in conflict.

(b) Where a highway includes two roadways thirty (30) feet or

more apart, then every crossing of each roadway of such divided

highway by an intersecting highway shall be regarded as a separate

intersection. In the event such intersecting highway also includes

two roadways thirty feet or more apart, then every crossing of two

roadways of such highways shall be regarded as a separate

intersection.