Doesn't apply to motorcycles.
http://www.oscn.net/applications/oscn/DeliverDocument.asp?CiteID=438397
Even then, I think that law rivals Oklahoma tint law for least enforcement.
********, not true.
12-101 references chapter 12 Article II, article 2 is the lighting portion of the motor vehicle code. In no place is does it exempt motorcycles from Chapter 12 article IV other equipment.
Title 47. Motor Vehicles
Oklahoma Statutes Citationized
Title 47. Motor Vehicles
Chapter 12 - Equipment of Vehicles
Article Article 1 - Scope and Effect of Regulations
Section 12-101 - Scope and Effect of Regulations
Cite as: O.S. §, __ __
...
C. The provisions of Article II et seq. of this chapter with respect to equipment on vehicles shall not apply to implements of husbandry, road machinery, road rollers, farm tractors, motorcycles as defined in Section 12-601 of this title, or vehicles designed to be moved solely by animal or human power, except as specifically made applicable in this chapter.
...
Oklahoma Statutes Citationized
Title 47. Motor Vehicles
Chapter 12 - Equipment of Vehicles
Article Article 4 - Other Equipment
Section 12-402 - Mufflers, Prevention of Noise
Cite as: O.S. §, __ __
A. Every vehicle shall be equipped, maintained, and operated so as to prevent excessive or unusual noise. Every motor vehicle shall at all times be equipped with a muffler or other effective noise-suppressing system in good working order and in constant operation, and no person shall use a muffler cut-out, bypass or similar device. No person shall modify the exhaust system of a motor vehicle in any manner which will amplify or increase the noise or sound emitted louder than that emitted by the muffler originally installed on the vehicle.
B. The engine and power mechanism of every motor vehicle shall be so equipped and adjusted as to prevent the escape of excessive fumes or smoke, or both.
12-601 which specifically covers motorcycles states the provisions of 12-201 subsection A, C, and D do apply. Which is Chapter 2. Chapter 2 only pertains to lighting... This prevents you from getting a ticket because you don't meet the lighting requirements for cars and trucks, and is also the way accent lighting is legal on motorcycles because it exempts them form most of the lighting restrictions placed on automobiles.