(ii) A two-axle vehicle weighing 4,000 pounds or more unladen when towing a fifth-wheel travel trailer exceeding 10,000 pounds, but not exceeding 15,000 pounds, gross vehicle weight rating, when the towing of the trailer is not for compensation, and if the person has passed a specialized written examination provided by the department relating to the knowledge of this code and other safety aspects governing the towing of recreational vehicles upon the highway.
The authority to operate combinations of vehicles under this subparagraph may be granted by endorsement on a class C license upon completion of that written examination.