"Tillerman" shall mean every person who is physically located on a Class A, B or C commercial motor vehicle in which they are steering or assisting in steering by remote control or other means, any axle, including a vehicle being towed by a motor vehicle, and shall possess the appropriate class of license for the vehicle being operated as required by Section 6-101 of Title 47 of the Oklahoma Statutes.
Okla. Stat. tit. 47, § 1-108.1