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  2. Siren (alarm) - Wikipedia

    en.wikipedia.org/wiki/Siren_(alarm)

    A siren is a loud noise-making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines. There are two general types: mechanical and electronic.

  3. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    Code 1: A time critical case with a lights and sirens ambulance response. An example is a cardiac arrest or serious traffic accident. Code 2: An acute but non-time critical response. The ambulance does not use lights and sirens to respond. An example of this response code is a broken leg. Code 3: A non-urgent routine case. These include cases ...

  4. Ambulance - Wikipedia

    en.wikipedia.org/wiki/Ambulance

    Ambulance driver – Some services employ staff with no medical qualification (or just basic first aid training) whose job is to simply drive the vehicle. In some emergency ambulance contexts this term is a pejorative towards personnel with higher medical training, as it implies they perform no function other than driving, although it may be ...

  5. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Ambulance in Zlín, Czech Republic, With blue LED lights. Emergency vehicles are permitted to display blue or combination of blue and red emergency lights and an audible warning signal (such as a siren) pursuant to § 41 of Act No. 361/2000, [36] which grants them the ability to ignore certain traffic laws.

  6. Emergency vehicle equipment - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_equipment

    An ambulance with two red revolving lights mounted above two flashing red lights, with two speakers between for the vehicle's electronic siren.Also seen are two antennae; the one seen between the two speakers is for a two-way radio, while the one seen in front of the flashing light on the left is probably for the vehicle's conventional AM/FM radio.

  7. List of civil defense sirens - Wikipedia

    en.wikipedia.org/wiki/List_of_civil_defense_sirens

    1 Alerting Communicators of America (ACA) sirens. 2 ATI sirens. 3 Federal Signal sirens. 4 Other. Toggle the table of contents. List of civil defense sirens. Add ...

  8. Directional siren - Wikipedia

    en.wikipedia.org/wiki/Directional_siren

    A directional siren is a siren with a bandwidth broader than 500 Hz-1.8 kHz that enables listeners to more quickly locate the source of the sound. Generally, sound localization accuracy is within 5 degrees, but enabling improved accuracy, for example in an ambulance siren, can lead to faster identification and response, thus enabling an ambulance to reach its destination faster and increase ...

  9. Emergency vehicle equipment in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle...

    Electronic sirens have replaced two-tone horns on most emergency vehicles. Emergency vehicle equipment is used in the United Kingdom to indicate urgent journeys by an emergency service. This usage is colloquially known as "blues and twos", which refers to the blue lights and the two-tone siren once commonplace (although most sirens now have a ...