Effectiveness of Audible Warning Devices on Emergency Vehicles

Lights and Sirens: A Review of Emergency Warning Systems

Are Present Horns, Whistles and Sirens Necessary for Communication?

"What Fire Truck" - A Fire Engineering Article

Emergency Vehicle Auditory Warning Signals : Physical and Psychoacoustic Considerations

How Well Can Audible Warning Devices be Localized by the Driver of an Automobile?

Acoustic Characteristics for Effective Ambulance Sirens