Sec. 4.5. (a) Except for a vehicle utilized in a funeral procession, a vehicle that is not described by section 4 of this chapter may not display a red lamp.
(b) Except as provided in subsection (c), a person who:
(1) purchases or otherwise acquires a vehicle with equipment described by section 4 of this chapter; and
(2) is not authorized to display a red lamp upon the vehicle;
shall immediately remove the red lamp from the vehicle.
(c) A person who:
(1) purchases or otherwise acquires a vehicle with equipment described by section 4 of this chapter; and
(2) uses the vehicle as a church bus;
is not required to remove the red lamp from the vehicle if the person renders the red lamp inoperable.