(1) The prima facie speed limitations under this subchapter do not apply to authorized emergency vehicles responding to emergency calls when the driver of the emergency vehicle is operating the vehicle's emergency lights and is also operating an audible signal by bell, siren, or exhaust whistle if other vehicles are present.
(2) The driver of an authorized emergency vehicle operated as a police vehicle is not required to operate a siren or flashing lights when operating the emergency vehicle as authorized under § 27-51-906.
(3) This section does not relieve the driver of an authorized emergency vehicle from the duty to drive with due regard for the safety of all persons using the street, nor shall it protect the driver of any emergency vehicle from the consequence of a reckless disregard of the safety of others.
(4) For purposes of this section, “emergency calls” means legitimate emergency situations which call for the operation of an emergency vehicle.