(2) driver or bus driver shall mean every person:

(i) who is self-employed and drives a bus for hire or profit; or (ii) who is employed by a motor carrier and operates a bus owned, leased or rented by such employer; or (iii) who as a volunteer drives a bus which is owned, leased or rented by a motor carrier. Provided, however, bus driver shall not include those persons who are engaged in the maintenance, repair or garaging of such buses and in the course of their duties must incidentally drive a bus without passengers, or who, as a volunteer, drive a bus with passengers for less than thirty days each year;

(3) motor carrier shall mean any person, corporation, municipality, or entity, public or private, who directs one or more bus drivers and who operates a bus wholly within or partly within and partly without this state in connection with the business of transporting passengers for hire or in the operation or administration of any business, or place of vocational, academic or religious instruction or religious service for persons under the age of twenty-one or persons of any age who are mentally disabled including nursery schools, day care centers and camps, or public agency, except such out-of-state public or governmental operators who may be exempted from the provisions of this article by the commissioner through regulation promulgated by the commissioner;

(4) intoxicating liquor shall mean and include, alcohol, spirits, liquor, wine, beer and cider having alcoholic content;

(5) drug shall mean any substance listed in section thirty-three hundred six of the public health law not dispensed or consumed pursuant to a lawful prescription;

(6) controlled substance shall mean any substance listed in section thirty-three hundred six of the public health law not dispensed or consumed pursuant to lawful prescription.

(7) accident shall include any accident with another vehicle, object or person, which occurs in this state or elsewhere, in which any person is killed or injured, or in which damage to the property of any one person, including the operator, in excess of one thousand five hundred dollars is sustained, or in which damage in excess of two thousand five hundred dollars is sustained to any bus as defined in section one hundred four of this chapter; provided however that accidents occurring outside this state shall not be recorded on the driver's license record.