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  2. List of sirens built by Alerting Communicators of America

    en.wikipedia.org/wiki/List_of_sirens_built_by...

    This siren is similar to Federal Signal's Thunderbolt series. Only a single unit remains in service in Milwaukee, WI. Screamers Electro-Mechanical 2, 5, 7.5, 10 8, 9, 9/12, 10/12 1968–1994 Omni Directional 102–115 dB at 100 ft. Series of small vertical sirens, comparable to Federal Signal Corporation's vertical sirens. Sentry 95

  3. American Signal Corporation - Wikipedia

    en.wikipedia.org/wiki/American_Signal_Corporation

    American Signal Corporation (ASC) is an outdoor warning siren and mass notification company in the United States. ASC was founded in 1873 as Biersach and Niedermeyer (B&N). After performing poorly, the company reformed as Alerting Communicators of America (ACA) in 1968, and expanded the line of warning systems they produced. In 1992, ACA went ...

  4. Category:Railway signalling manufacturers - Wikipedia

    en.wikipedia.org/wiki/Category:Railway...

    Westinghouse Brake and Signal Company; Westinghouse Rail Systems This page was last edited on 23 February 2024, at 12:16 (UTC). Text ...

  5. North American railroad signaling - Wikipedia

    en.wikipedia.org/wiki/North_American_railroad...

    General North American practice is to group routes by speeds and use a single blade for, say, "medium speed" regardless of the number of routes involved (Speed Signaling). The primary exception to this situation is in the field of heavy rapid transit, such as subways and elevated lines, which make use of a localization of the British practice ...

  6. Safetran - Wikipedia

    en.wikipedia.org/wiki/Safetran

    Safetran Systems Corporation was an American company that manufactured switch machines, railroad wayside signal systems, rail transit signaling and rail-highway level crossing active warning systems.

  7. Hall Signal Company - Wikipedia

    en.wikipedia.org/wiki/Hall_Signal_Company

    The company was established in 1871 with main offices in New York City and a factory in Meriden, Connecticut. [3] In 1892 it built a new, larger factory in Garwood, New Jersey. [4] The company reorganized in 1912 to raise capital and expand its Garwood factory. [5] In 1925 Hall Signal Co. was purchased by Union Switch and Signal, principally ...

  8. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!

  9. Union Switch & Signal - Wikipedia

    en.wikipedia.org/wiki/Union_Switch_&_Signal

    Union Switch & Signal (commonly referred to as US&S) was an American company based in Pittsburgh, Pennsylvania, which focused on railway signaling equipment, systems and services. The company was acquired by Ansaldo STS (from 2015, Hitachi Rail STS ) in 1988, [ 1 ] operating as a wholly-owned company until January 2009, when US&S was renamed ...