Sec. 6. "Authorized emergency vehicle" means the following:
(1) The following vehicles:
(A) Fire department vehicles.
(B) Police department vehicles.
(C) Ambulances.
(D) Emergency vehicles operated by or for hospitals or health and hospital corporations under IC 16-22-8.
(2) Vehicles designated as emergency vehicles by the Indiana department of transportation under IC 9-21-20-1.
(3) Motor vehicles that, subject to IC 9-21-20-2, are approved by the Indiana emergency medical services commission that are:
(A) ambulances that are owned by persons, firms, limited liability companies, or corporations other than hospitals; or
(B) not ambulances and that provide emergency medical services, including extrication and rescue services (as defined in IC 16-18-2-110).
(4) Vehicles of the department of correction that, subject to IC 9-21-20-3, are:
(A) designated by the department of correction as emergency vehicles; and
(B) responding to an emergency.