(B) The classes of commercial driver's licenses and the commercial motor vehicles that they authorize the operation of are as follows:

1. (1) Class A--any combination of vehicles with a combined gross vehicle weight rating of twenty-six thousand one pounds or more, if the gross vehicle weight rating of the vehicle or vehicles being towed is in excess of ten thousand pounds.
2. (2) Class B--any single vehicle with a gross vehicle weight rating of twenty-six thousand one pounds or more or any such vehicle towing a vehicle having a gross vehicle weight rating that is not in excess of ten thousand pounds.
3. (3) Class C--any single vehicle, or combination of vehicles, that is not a class A or class B vehicle, but that is designed to transport sixteen or more passengers, including the driver, or is transporting hazardous materials in an amount requiring placarding, or any school bus with a gross vehicle weight rating of less than twenty-six thousand one pounds that is designed to transport fewer than sixteen passengers including the driver.

(C) The following endorsements and restrictions apply to commercial drivers' licenses:

1. (1) H--authorizes the driver to drive a vehicle transporting hazardous materials in an amount requiring placarding;
2. (2) K--restricts the driver to only intrastate operation;
3. (3) L--restricts the driver to vehicles not equipped with air brakes;
4. (4) T--authorizes the driver to drive a vehicle configured with double or triple trailers that create more than one articulation point for the combination;
5. (5) P--authorizes the driver to drive vehicles designed to transport sixteen or more passengers, including the driver;
6. (6) P1--authorizes the driver to drive class A vehicles designed for fewer than sixteen passengers, including the driver, and all lesser classes of vehicles without restriction as to the designed passenger capacity of the vehicle;
7. (7) P2--authorizes the driver to drive class A or B vehicles designed for fewer than sixteen passengers, including the driver, and all lesser classes of vehicles without restriction as to the designed passenger capacity of the vehicle;
8. (8) P4-- Restricts the driver to driving class C school buses designed to transport fewer than sixteen passengers including the driver.
9. (9) N--authorizes the driver to drive tank vehicles;
10. (10) S--authorizes the driver to drive school buses transporting children;
11. (11) X--authorizes the driver to drive tank vehicles transporting hazardous materials in a quantity requiring placarding;
12. (12) W--restricts the driver to the operation of commercial motor vehicles in accordance with a waiver for farm-related service industries issued under section 4506.24 of the Revised Code;
13. (13) V--indicates the existence of a medical variance on the driver's commercial driver's license information system driver record.

(D) In addition to any endorsement that otherwise may apply, a person who is engaged in the towing of a disabled or wrecked motor vehicle shall hold a commercial driver's license bearing any endorsement required to drive the towed vehicle except the driver is not required to have either of the following:

1. (1) A passenger endorsement to tow an unoccupied passenger vehicle;
2. (2) Any endorsement required for the wrecked or disabled vehicle when the driver initially removes a vehicle from the site of the emergency where the vehicle became wrecked or disabled to the nearest appropriate repair, disposal, or storage facility, as applicable.