(a) A commercial driver’s license issued in accordance with section 14-44c shall be designated as class A, B or C, in accordance with the provisions of subsection (b) of section 14-44d. All other operators’ licenses shall be designated as class D. A license of any class that also authorizes the operation of a motorcycle shall contain the designation “M”.

      (b) A commercial driver’s license which contains the endorsement “S” evidences that the holder meets the requirements of section 14-44 to operate a school bus or any vehicle described in subsection (c) of this section. A commercial driver’s license may contain any of the following additional endorsements:

      “P”- authorizes the operation of commercial motor vehicles designed to carry passengers;

      “H”- authorizes the operation of vehicles transporting hazardous materials;

      “N”- authorizes the operation of tank vehicles;

      “X”- authorizes both hazardous materials and tank vehicles; and

      “T”- authorizes the operation of vehicles with up to three trailing, nonpower units.

The commissioner may establish one or more restrictions on commercial driver’s licenses of any class, in regulations adopted in accordance with the provisions of chapter 54. Subject to the provisions of subsection (b) of section 14-44d, a commercial driver’s license of any class authorizes the holder of such license to operate any motor vehicle that may be operated by the holder of a class D operator’s license.

      (c) A commercial driver’s license or a class D license that contains any of the following endorsements evidences that the holder meets the requirements of section 14-44:

      “V”- authorizes the transportation of passengers in a student transportation vehicle, as defined in section 14-212, or any vehicle that requires an “A” or “F” endorsement;

      “A”- authorizes the transportation of passengers in an activity vehicle, as defined in section 14-1, or any vehicle that requires an “F” endorsement; and

      “F”- authorizes the transportation of passengers in a taxicab, motor vehicle in livery service, service bus or motor bus.

The commissioner may establish one or more endorsements or restrictions on class D licenses, in accordance with regulations adopted in accordance with the provisions of chapter 54.

      (d) No person shall operate a motor vehicle in violation of the classification of the license issued to him.

      (e) Any person who violates any provision of subsection (d) or (e) of this section shall, for a first offense, be deemed to have committed an infraction and be fined not less than thirty-five dollars or more than fifty dollars and, for a subsequent offense, shall be fined not more than one hundred dollars or imprisoned not more than thirty days, or both.