According to title 47, an authorized emergency vehicle must have an audible signal and a what?

An authorized emergency vehicle is defined under Title 47 to ensure that the vehicle is easily identifiable and equipped for responding to emergencies. One of the essential requirements is that it must have an audible signal, such as a siren, to alert other road users of its presence, which is crucial during emergency situations. In addition to this audible signal, the vehicle must also have a visual signal. This visual component can include flashing lights, which further enhance the vehicle's visibility and presence on the road.

The combination of both audible and visual signals serves to ensure the safety of the emergency responders and the public by effectively communicating that the vehicle is responding to an emergency and requires the right of way. This adherence to the safety regulations set forth in Title 47 is vital for emergency operations, allowing for a swift response in critical situations.