As used in ORS 87.603 to 87.633, unless the context requires otherwise:
(1) “Ambulance” has the meaning given that term in ORS 682.025.
(2) “Ambulance services” includes the transportation of an individual who is ill or injured or who has a disability in an ambulance and the administration of medical or emergency care, if necessary, while the individual is being transported.
(3) “Governmental unit” means the state, any county, city or other municipal corporation or any department, board or other agency of any of them.