Ambulance Siren

An ambulance siren is a loud, attention-grabbing sound emitted from an ambulance to alert people and vehicles of its presence as it responds to an emergency.

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Separate Sounds for Ambulance Siren and Police Siren

For the purpose of early patient transport an ambulance may use as signal the wailing siren sound having rising and falling loop; while a police vehicle in emergency service will use siren with passing sound effect with short brust.