Okla. Stat. tit. 47, § 47-12-205: Reflectors

A. Every motor vehicle, trailer, semitrailer, and pole trailer

shall carry on the rear, either as a part of the tail lamps or

separately, at least two red reflectors meeting the requirements of

this section; provided, that vehicles described in Section 12-208 of

this title shall be equipped with reflectors as required in Sections

12-208 and 12-211 of this title.

B. Every such reflector shall be mounted on the vehicle at a

height not less than fifteen (15) inches nor more than seventy-two

(72) inches measured as set forth in subsection B of Section 12-202

of this title, and shall be of such size and characteristics and so

mounted as to be visible at night from all distances within six

hundred (600) feet to one hundred (100) feet from such vehicle when

directly in front of lawful lower beams of headlamps, except as

required in Sections 12-211, 12-215 and 12-216 of this title.