Okla. Stat. tit. 47, § 47-12-201

Adoption of federal specifications and standards.

A. The United States Department of Transportation

specifications and standards for headlamps, auxiliary driving lamps,

tail lamps, signal lamps, reflectors, and other lighting equipment

and signal devices, pursuant to 49 C.F.R., Section 571.108, are

hereby adopted by the State of Oklahoma.

B. Except as otherwise provided in this chapter and subject to

exceptions for parked vehicles, every vehicle upon a highway within

this state shall properly display all lamps and illuminating devices

as required by law:

1. At any time from one-half (1/2) hour after sunset to one-

half (1/2) hour before sunrise, also referred to in this chapter as

nighttime; and

2. At any other time when, due to insufficient light or

unfavorable atmospheric conditions, persons and vehicles on the

highway are not clearly discernible at a distance of one thousand

(1,000) feet or less.

C. All lamps required by this chapter shall display a steady

light except as otherwise prescribed by this chapter. Any required

individual lamp may be combined or incorporated with any other

required individual lamp if the combined or incorporated lamps meet

all of the individual lighting requirements of this chapter for each

individual lamp contained therein.

D. No lamp, other than a headlamp, displayed on any vehicle

shall project a glaring light; provided, every headlamp shall comply

with Section 12-222 of this title.