Okla. Stat. tit. 47, § 47-12-203.1: Number of driving lamps required or permitted

A. At all times specified in subsection B of Section 12-201 of

this title, at least two lighted headlamps shall be displayed, one

on each side at the front of every motor vehicle, except when such

vehicle is parked subject to the regulations governing lights on

parked vehicles, as provided in Section 12-214 of this title.

B. Whenever a motor vehicle equipped with headlamps as herein

required is also equipped with any auxiliary driving lamps or a spot

lamp or any other lamp on the front thereof projecting a beam of

intensity greater than three hundred (300) candlepower, not more

than a total of four of any such lamps on the front of a vehicle

shall be lighted at any one time when upon a highway.

C. The driver of any vehicle shall comply with the provisions

of Section 12-217 of this title regarding the use of alternate

headlamp equipment.