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  2. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Emergency vehicle lighting, also known as simply emergency lighting or emergency lights, is a type of vehicle lighting used to visually announce a vehicle's presence to other road users. A sub-type of emergency vehicle equipment , emergency vehicle lighting is generally used by emergency vehicles and other authorized vehicles in a variety of ...

  3. Suzuki VL 1500 Intruder LC / Boulevard C90 - Wikipedia

    en.wikipedia.org/wiki/Suzuki_VL_1500_Intruder_LC...

    In 2004, Suzuki added a four-way emergency flasher/high beam passing switch and multi-reflector turn signals. [1] The VL name refers to the V-twin engine and "long" frame, [4] 1500 is the approximate metric displacement of the engine, and the LC means Legendary Classic.

  4. Automotive lighting - Wikipedia

    en.wikipedia.org/wiki/Automotive_lighting

    The cycle would repeat until the power to the thermal flasher was switched off by the stalk switch. [53] Thermal flashers gradually gave way to electromechanical relays; one of many control strategies with relay-type flashers is to use a relaxation oscillator chip to generate square waves to the relay coil, causing the relay contacts to open ...

  5. HAWK beacon - Wikipedia

    en.wikipedia.org/wiki/HAWK_beacon

    Emergency-vehicle hybrid beacons, for emergency vehicle facilities (i.e. fire stations), use the same signal head design, and uses an alternating flashing red aspect to protect departing emergency vehicles. The only distinguishing part of the design is a different sign, R10-14, which is used with the signal. Unlike at a HAWK beacon, drivers are ...

  6. Emergency vehicle equipment - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_equipment

    The lights can be made to flash via a range of techniques, dependent on the technology used, and the desired end effect. Types of beacon include: Light bars - A long but narrow 'strip' of lights on top of an emergency vehicle, which can be configured with almost infinite combinations of different lighting technologies from the list below. These ...

  7. Fire alarm system - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_system

    Some fire alarm systems utilize emergency voice alarm communication systems (EVAC) [17] to provide prerecorded and manual voice messages. Voice alarm systems are typically used in high-rise buildings, arenas, and other large "defend-in-place" occupancies such as hospitals and detention facilities where total evacuation is difficult to achieve.

  8. Traffic light control and coordination - Wikipedia

    en.wikipedia.org/wiki/Traffic_light_control_and...

    The battery backups can operate the controller in emergency mode with the red light flashing or in fully functional mode. In 2004, California Energy Commission recommended to have local governments to convert their traffic lights to LEDs with battery backups. This would lower the energy consumption and enhance the safety at major intersections.

  9. Fire alarm notification appliance - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_notification...

    The system can be stand alone (i.e. using dedicated loudspeakers, which can also feature integrated strobe lights), or the system can accommodate public address system functionality. In 1973, the Autocall fire alarm company (merged to SimplexGrinnell then relaunched), manufactured the first voice evacuation system.