Okla. Stat. tit. 2, § 2-6-303: Livestock trailers to be identified by number or driver

license number.

A. It shall be unlawful to operate any trailer, not otherwise

required to be licensed by law, which is used for the hauling of

livestock upon the roads or highways of the State of Oklahoma unless

that trailer bears an identifying number.

B. Trailers owned by individual persons shall be identified

with the driver license number of the owner. Trailers owned by

corporations, partnerships, and other associations or owned by a

person who has no driver license shall be identified with numbers as

designated by rules of the State Board of Agriculture with advice

from the Oklahoma Department of Public Safety.

C. The identifying number shall be in Arabic numerals in a

contrasting color of not less than two (2) inches high painted or

otherwise affixed to the rear of the trailer so it is clearly

visible from the rear at all times and in a manner as to reasonably

assure against alteration or destruction.

D. The State Board of Agriculture may promulgate rules, and

with the advice of the Oklahoma Department of Public Safety, direct

the affixing of identifying numbers to livestock trailers.

E. It shall be unlawful to alter a livestock trailer

identifying number other than to comply with this subarticle or

rules issued pursuant to this subarticle.

F. No fee shall be charged for the issuance of any trailer

identification number required by this subarticle.