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  2. ISO standards for trailer connectors - Wikipedia

    en.wikipedia.org/wiki/ISO_standards_for_trailer...

    12 Volt 7-pin trailer connector ISO 7638-2 for ABS and EBS (Towing vehicle side) Physical design according to standard ISO 7638-2. [4] [6] [7] This connector is intended to be used for 12V ABS and EBS on heavy duty trailers. Identified by key tab on outer ring between pin 3 and 4. #

  3. VRB-25 - Wikipedia

    en.wikipedia.org/wiki/VRB-25

    The VRB-25 is a lighthouse optical system designed and built by Vega Industries Ltd. in Porirua, New Zealand. It was originally designed in 1993–95 with the assistance of the United States Coast Guard to meet USCG requirements for a robust mechanism requiring minimum maintenance. It has become the Coast Guard's standard 12 volt rotating ...

  4. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Green flashing beacons can be used by doctors (registered with the General Medical Council). [92] Many doctors now either volunteer or are employed as first responders for ambulance services and their vehicles will carry the, usually blue, lights used by the service or both blue and green to indicate their profession. [93]

  5. Automotive lighting - Wikipedia

    en.wikipedia.org/wiki/Automotive_lighting

    LED lights are used for flashing beacon lights on vehicles such as maintenance trucks. [140] Previously, traditional light sources required the engine to continue running to ensure that the battery would not become depleted if the lights were to be used for more than a few hours.

  6. Aerobeacon - Wikipedia

    en.wikipedia.org/wiki/Aerobeacon

    An aerobeacon is a light assembly used to create a fixed or flashing signal visible over long distances. It consists of a high intensity electric lamp mounted with a focusing device in a cylindrical housing, which usually is rotated on a vertical axis by an electric motor. The sweep of the narrow beam thus produced gives the flashing effect.

  7. Federal Signal Corporation - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Corporation

    Many of these sirens have been removed, but some still are operating in tornado siren systems. Longtime engineer Earl Gosswiller patented the Beacon-Ray and TwinSonic products, which were popular emergency vehicle lightbars. In 1955, the company became a corporation, renaming itself "Federal Sign and Signal Corporation" [citation needed]. By ...