4. A recreational vehicle that is driven for personal use. 5.A vehicle that is owned, leased, or controlled by an air carrier, as defined by Texas Transportation Code (TRC), Section 21.155, and that is driven or operated exclusively by an employee of the air carrier only on the premises of an airport, as defined by the TRC, Section 22.001, on service roads to which the public does not have access. 6. A vehicle used exclusively to transport seed cotton modules or cotton burrs. Different Classes of Commercial Driver Licenses The three (3) basic types or classes of Commercial Driver Licenses are described below. For further information, refer to Figure 1.2. This helps a person determine which class of license he/she needs and which sections) of the handbook to study. CLASS A: Any combination of vehicles with a gross combination weight rating of 26,001 pounds or more, provided the gross vehicle weight rating of the vehicle or vehicles towed exceeds 10,000 pounds; CLASS B Any single vehicle with a gross vehicle weight rating of 26,001 pounds or more, anyone of those vehicles towing a vehicle that does not exceed 10,000 pounds gross vehicle weight rating, and any vehicle designed to transport 24 passengers or more, including the driver and a Class B license will be restricted to operating busses under 26,001 pounds GVWR if the skills testis taken in a bus with a GVWR of less than 26,001 pounds and CLASS C: Any single vehicle or combination of vehicles that is not a Class A or Class B if the vehicle is: 1) designed to transport 16 to 23 passengers including the driver or 2) used in the transportation of hazardous materials that require the vehicle to be placarded under 49 CFR, Part 172, Subpart F.