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  2. Emergency service response codes - Wikipedia

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

    Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with lights only (rarely allowable by state statutes) Code 1: Respond to the call without lights or sirens. Some agencies may use the terms "upgrade" and "downgrade" to denote an increase or decrease in priority.

  3. Rules of the Road: Lights and sirens, oh my! When to pull ...

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    For premium support please call: 800-290-4726 more ways to reach us. Sign in. ... Lights and sirens, oh my! ... when an emergency vehicle does appear, not all drivers do the same thing, which ...

  4. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Blue emergency lights may only be used when performing a stop on a vehicle or when the vehicle is stationary at a scene. Response - police officers are permitted to drive intermediate-powered vehicles up to approx. 200bhp, utilising blue lights and sirens for emergency response whilst claiming exemptions.

  5. Courtesy lights - Wikipedia

    en.wikipedia.org/wiki/Courtesy_lights

    A vehicle lawfully displaying courtesy lights is not an emergency response vehicle. In most states, vehicles displaying courtesy lights must still stop at stop signs, red lights, etc. and may not speed or disobey any traffic regulations. [1] Usually, violation ticket fines are increased if the ticketed car was flashing courtesy lights.

  6. Rules of the Road: Lights and sirens, oh my! When to pull ...

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    For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Mail. Sign in. Subscriptions ...

  7. Traffic signal preemption - Wikipedia

    en.wikipedia.org/wiki/Traffic_signal_preemption

    Traffic signal preemption (also called traffic signal prioritisation) is a system that allows an operator to override the normal operation of traffic lights.The most common use of these systems manipulates traffic signals in the path of an emergency vehicle, halting conflicting traffic and allowing the emergency vehicle right-of-way, thereby reducing response times and enhancing traffic safety.

  8. Siren (alarm) - Wikipedia

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

    Sound sample ⓘ An 1860s-era siren. [2] A siren is a loud noise-making device. There are two general types: mechanical and electronic. 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.

  9. Nearly 95 million Americans are living with noise pollution ...

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    For premium support please call: 800-290-4726 ... poor-quality sleep. Not only can that make you feel ... “Schedule times in your day when you’re not exposed to noise to give your ears and ...