(a) A Class B driver’s license authorizes the holder of the license to operate:
(1) a vehicle with a gross vehicle weight rating that is more than 26,000 pounds;
(2) a vehicle with a gross vehicle weight rating of 26,000 pounds or more towing:
(A) a vehicle, other than a farm trailer, with a gross vehicle weight rating that is not more than 10,000 pounds; or
(B) a farm trailer with a gross vehicle weight rating that is not more than 20,000 pounds; and
(3) a bus with a seating capacity of 24 passengers or more.
(b) For the purposes of Subsection (a)(3), seating capacity is computed in accordance with § 502.253, except that the operator’s seat is included in the computation.