Okla. Stat. tit. 47, § 47-12-218.1: Use of lights on wreckers and tow vehicles

Flashing red or blue lights or a combination of flashing red and

blue lights may be used on licensed Class AA wreckers or wrecker

support vehicles at the scene of an emergency.

Any licensed Class AA wrecker or wrecker support vehicle may be

equipped with a lamp displaying an amber light, visible from a

distance of not less than five hundred (500) feet to the front of

the vehicle or from a distance of not less than five hundred (500)

feet to the rear of the vehicle. Such lamp shall only be used when

leaving the scene of a tow service call and for the purpose of

warning the operators of other vehicles to exercise care in

approaching, overtaking or passing such vehicle.