(a) The department may issue a commercial driver’s license with endorsements:
(1) authorizing the driving of a vehicle transporting hazardous materials, subject to the requirements of Title 49 C.F.R. part 1572;
(2) authorizing the towing of a double or triple trailer or a trailer over a specified weight;
(3) authorizing the driving of a vehicle carrying passengers;
(4) authorizing the driving of a tank vehicle;
(5) representing a combination of hazardous materials and tank vehicle endorsements; or
(6) authorizing the driving of a school bus, as defined by § 541.201.
(b) The department may issue a commercial learner’s permit with endorsements authorizing the driving of a passenger vehicle, a school bus, or a tank vehicle.

(c) An endorsement under Subsection (b) for a passenger vehicle or a school bus allows a permit holder to operate a vehicle with only the following passengers:
(1) federal or state auditors and inspectors, test examiners, or other permit holders; and
(2) the commercial driver’s license holder required under § 522.011(a)(2)(B).
(d) An endorsement under Subsection (b) for a tank vehicle allows a permit holder to operate only an empty tank vehicle that has been purged of any hazardous materials.
(e) The holder of a commercial driver’s license or commercial learner’s permit may not drive a vehicle that requires an endorsement unless the proper endorsement appears on the license or permit.
(f) A person commits an offense if the person violates Subsection (c), (d), or (e). An offense under this section is a Class C misdemeanor.