Terms used in this chapter shall be construed as follows, unless another construction is clearly apparent from the language or context in which the term is used or unless the construction is inconsistent with the manifest intention of the General Assembly:

      (1) “Activity vehicle” means a student transportation vehicle that is used to transport students in connection with school-sponsored events and activities, but is not used to transport students to and from school;

      (2) “Agricultural tractor” means a tractor or other form of nonmuscular motive power used for transporting, hauling, plowing, cultivating, planting, harvesting, reaping or other agricultural purposes on any farm or other private property, or used for the purpose of transporting, from one farm to another, agricultural implements and farm products, provided the agricultural tractor is not used on any highway for transporting a pay load or for some other commercial purpose;

      (3) “Antique, rare or special interest motor vehicle” means a motor vehicle twenty years old or older which is being preserved because of historic interest and which is not altered or modified from the original manufacturer’s specifications;

      (4) “Apparent candle power” means an illumination equal to the normal illumination in foot candles produced by any lamp or lamps, divided by the square of the distance in feet between the lamp or lamps and the point at which the measurement is made;

      (5) “Authorized emergency vehicle” means (A) a fire department vehicle, (B) a police vehicle, or (C) a public service company or municipal department ambulance or emergency vehicle designated or authorized for use as an authorized emergency vehicle by the commissioner;

      (6) “Auxiliary driving lamp” means an additional lighting device on a motor vehicle used primarily to supplement the general illumination in front of a motor vehicle provided by the motor vehicle’s head lamps;

      (7) “Bulb” means a light source consisting of a glass bulb containing a filament or substance capable of being electrically maintained at incandescence;

      (8) “Camp trailer” includes any trailer designed for living or sleeping purposes and used exclusively for camping or recreational purposes;

      (9) “Camp trailer registration” means the type of registration issued to any trailer that is for nonbusiness use and is limited to camp trailers and utility trailers;

      (10) “Camp vehicle” means any motor vehicle that is regularly used to transport persons under eighteen years of age in connection with the activities of any youth camp, as defined in section 19a-420;

      (11) “Camper” means any motor vehicle designed or permanently altered in such a way as to provide temporary living quarters for travel, camping or recreational purposes;

      (12) “Combination registration” means the type of registration issued to a motor vehicle used for both private passenger and commercial purposes if such vehicle does not have a gross vehicle weight rating in excess of twelve thousand five hundred pounds;

      (13) “Commercial driver’s license” or “CDL” means a license issued to an individual in accordance with the provisions of sections 14-44a to 14-44m, inclusive, which authorizes such individual to drive a commercial motor vehicle;

      (14) “Commercial driver’s license information system” or “CDLIS” means the national database of holders of commercial driver’s licenses established by the Federal Motor Carrier Safety Administration pursuant to Section 12007 of the Commercial Motor Vehicle Safety Act of 1986;

      (15) “Commercial motor vehicle” means a vehicle designed or used to transport passengers or property, except a vehicle used for farming purposes in accordance with 49 CFR 383.3(d), fire fighting apparatus or an emergency vehicle, as defined in section 14-283, or a recreational vehicle in private use, which (A) has a gross vehicle weight rating of twenty-six thousand and one pounds or more, or a gross combination weight rating of twenty-six thousand and one pounds or more, inclusive of a towed unit or units with a gross vehicle weight rating of more than ten thousand pounds; (B) is designed to transport sixteen or more passengers, including the driver, or is designed to transport more than ten passengers, including the driver, and is used to transport students under the age of twenty-one years to and from school; or (C) is transporting hazardous materials and is required to be placarded in accordance with 49 CFR 172, Subpart F, as amended, or any quantity of a material listed as a select agent or toxin in 42 CFR Part 73;

      (16) “Commercial registration” means the type of registration required for any motor vehicle designed or used to transport merchandise, freight or persons in connection with any business enterprise, unless a more specific type of registration is authorized and issued by the commissioner for such class of vehicle;

      (17) “Commercial trailer” means a trailer used in the conduct of a business to transport freight, materials or equipment whether or not permanently affixed to the bed of the trailer;

      (18) “Commercial trailer registration” means the type of registration issued to any commercial trailer;

      (19) “Commissioner” includes the Commissioner of Motor Vehicles and any assistant to the Commissioner of Motor Vehicles who is designated and authorized by, and who is acting for, the Commissioner of Motor Vehicles under a designation; except that the deputy commissioners of motor vehicles and the Attorney General are deemed, unless the Commissioner of Motor Vehicles otherwise provides, to be designated and authorized by, and acting for, the Commissioner of Motor Vehicles under a designation;

      (20) “Controlled substance” has the same meaning as in section 21a-240 and the federal laws and regulations incorporated in chapter 420b;

      (21) “Conviction” means an unvacated adjudication of guilt, or a determination that a person has violated or failed to comply with the law in a court of original jurisdiction or an authorized administrative tribunal, an unvacated forfeiture of bail or collateral deposited to secure the person’s appearance in court, the payment of a fine or court cost, or violation of a condition of release without bail, regardless of whether or not the penalty is rebated, suspended or probated;

      (22) “Dealer” includes any person actively engaged in buying, selling or exchanging motor vehicles or trailers who has an established place of business in this state and who may, incidental to such business, repair motor vehicles or trailers, or cause them to be repaired by persons in his or her employ;

      (23) “Disqualification” means a withdrawal of the privilege to drive a commercial motor vehicle, which occurs as a result of (A) any suspension, revocation, or cancellation by the commissioner of the privilege to operate a motor vehicle; (B) a determination by the Federal Highway Administration, under the rules of practice for motor carrier safety contained in 49 CFR 386, as amended, that a person is no longer qualified to operate a commercial motor vehicle under the standards of 49 CFR 391, as amended; or (C) the loss of qualification which follows any of the convictions or administrative actions specified in secti