Okla. Stat. tit. 47, § 47-12-601: Headlamps and other illuminating devices on certain

motorcycles - Definition.

A. Every motorcycle of the model year 1978 or later operating

upon a highway within this state shall display at all times:

1. A lighted headlamp or headlamps; and

2. Any other illuminating devices, if manufactured to be

displayed at all times.

This subsection shall not apply to motorcycles used in official

law enforcement capacities.

B. The provisions of subsections A, C and D of Section 12-201

of this title shall apply to motorcycles; provided, however,

notwithstanding the provisions of subsection E of Section 12-201 of

this title, a motorcycle may be equipped with a motorcycle headlamp

modulation system as authorized by 49 C.F.R., Section 571.108,

S7.9.4.

C. As used in Chapter 12 of this title, “motorcycle” shall

include, unless otherwise specifically indicated, motorcycles and

motor-driven cycles as those terms are defined in Chapter 1 of this

title.