Okla. Stat. tit. 47, § 1133.3
At the option of the owner, the Oklahoma Tax Commission is authorized to register boat trailers and utility-type trailers, which are not being utilized in a commercial capacity, on an annual basis for a fee of One Dollar ($1.00).
Laws 2008, SB 1511, c. 378, § 3, emerg. eff. July 1, 2008.