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  2. Federal Signal Corporation - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Corporation

    Federal Signal Corporation is an American manufacturer headquartered in Downers Grove, Illinois. Federal Signal manufactures street sweeper vehicles, public address systems, emergency vehicle equipment, and emergency vehicle lighting. The company operates two groups: Federal Signal Environmental Solutions and Federal Signal Safety and Security ...

  3. North American railroad signals - Wikipedia

    en.wikipedia.org/.../North_American_railroad_signals

    Vertical color light signals are the second major pattern of color light signals, and today represent the most popular form of signal in North America, supplanting the searchlight. [ citation needed ] These signals are not different from the triangular type color signal in function, but present a much altered visual appearance.

  4. Federal Motor Vehicle Safety Standard 108 - Wikipedia

    en.wikipedia.org/wiki/Federal_Motor_Vehicle...

    FMVSS 108 is codified in Title 49 of the Code of Federal Regulations Part 571, Section 108. [1] The most recent version was published by NHTSA for comment in December 2007, [2] and since then, it has been amended in April 2011, [3] August 2011, [4] January 2012, [5] December 2012, [6] December 2015, [7] February 2016, [8] and February 2022.

  5. General Railway Signal - Wikipedia

    en.wikipedia.org/wiki/General_Railway_Signal

    General Railway Signal was one of the 30 stocks when the Dow Jones Industrial Average [3] was expanded from a 20-stock average on October 1, 1928. It was replaced in the DJIA by Liggett & Myers on July 18, 1930. In 1965, General Signal Corporation (GSX) was created with the intent to diversify into areas other than railway signaling.

  6. Automotive lighting - Wikipedia

    en.wikipedia.org/wiki/Automotive_lighting

    Screw-base lights are never used in automobile applications due to their loosening under vibration. Signal lights with internal or external coloured lenses use colourless bulbs; conversely, lights with colourless lenses may use red or amber bulbs to provide light of the required colours for the various functions.

  7. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Historically, white was used in combination with red bulb lenses in the Federal Signal Corporation Beacon Ray rotating beacon, introduced in 1948 and the later 1960s and 1970s model P A lights equipped with clear domes on through the 1980s, when revolving bulb and reflector type emergency lighting including the later 1970s Twinsonic and ...

  8. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster. They are identified mostly by their distinctive stacked "flying saucer" design.

  9. Manual on Uniform Traffic Control Devices - Wikipedia

    en.wikipedia.org/wiki/Manual_on_Uniform_Traffic...

    The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road surface markings, and signals are designed, installed ...

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