The prima-facie speed limitation set forth in Section 345.05 shall not apply to emergency vehicles or public safety vehicles responding to emergency calls when the driver thereof is sounding audible signals by bell, siren or whistle. This provision shall not relieve the driver of an emergency vehicle or public safety vehicle from the duty to drive with due regard for the safety of all persons using such public grounds.
(Ord. 169-1971. Passed 6-7-71.)