Okla. Stat. tit. 47, § 47-12-214

A. Whenever a motor vehicle or combination of vehicles is

parked or stopped, whether attended or unattended, upon a roadway or

shoulder adjacent thereto, and there is not sufficient light to

reveal the parked or stopped vehicle to the operator of another

vehicle within a distance of one thousand (1,000) feet upon such

roadway or shoulder, such vehicle so parked or stopped shall display

the following:

1. At least two lamps displaying a white or amber light visible

from a distance of one thousand (1,000) feet to the front of the

vehicle; and

2. At least two lamps displaying a red light visible at a

distance of one thousand (1,000) feet to the rear of the vehicle.

B. Subsection A of this section shall not apply to:

1. A vehicle parked or stopped on a street or highway with

designated on-street parking or with a speed limit of twenty-five

(25) miles per hour or less:

a. when the vehicle is positioned as close as practicable

to the outer edge of the roadway or of the shoulder,

if present, or

b. unless the street or highway is posted as a no-parking

area;

2. A vehicle which has lost the ability to display lamps and

the vehicle is parked or stopped off the roadway;

3. A vehicle which is disabled, unattended, and parked or

stopped off the roadway; or

4. An authorized emergency vehicle of a law enforcement agency,

when such vehicle is parked or stopped on the shoulder.

C. Any lighted headlamps upon a parked or stopped vehicle shall

be lower beams.