As used in the Ambulance Standards Act:
A. "ambulance" means a vehicle, including motor vehicles or watercraft, designed and used or intended to be used for the transportation of sick or injured persons;
B. "attendant" means a person who, on a regular or irregular basis, either paid or voluntary, serves as an assistant to the driver in the operation of the ambulance;
C. "department" means the department of transportation; and
D. "driver" means a person who, on a regular or irregular basis, either paid or voluntary, serves as the operator of an ambulance.