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  2. North American railroad signals - Wikipedia

    en.wikipedia.org/.../North_American_railroad_signals

    The Hall disc signal (also called a "banjo" signal) was the first electrically operated signal to be widely adopted by American railroads. Thomas Hall patented his disc signal design in 1867. [2]: 146–147 A banjo-shaped wooden case housed a large iron wire hoop with red silk stretched and glued over it.

  3. North American railroad signaling - Wikipedia

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

    In 1992, the American Association of Railroad Superintendents (AARS) convened a special committee, which suggested to its board of directors, executive council, and membership that “the AARS sponsor a full conference on the standardization of railroad operating rules, practices, and procedures, and that this conference be conducted on the ...

  4. Railway signal - Wikipedia

    en.wikipedia.org/wiki/Railway_signal

    Highball Signal – Historic railroad signal in Delmar, Delaware, US; North American railroad signals; Railway signalling – The principle of signals used to control railway traffic; Train protection system – Railway fail-safe against human error; Train speed optimization – A system that reduces the need for trains to brake and accelerate

  5. Hall Signal Company - Wikipedia

    en.wikipedia.org/wiki/Hall_Signal_Company

    The Hall Signal Company was an American manufacturer of railway signaling equipment in the 19th and 20th centuries. Hall's equipment was widely used by American railroad companies. The company's founder, William Phillips Hall, was an inventor who developed several important devices in the history of railway signalling.

  6. Glossary of North American railway terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_North_American...

    Procession of a train past a stop signal with verbal permission from the dispatcher. [4] Derives from Rule 241, which is used to grant such permission under certain rule sets. [5] 251 (US) On most Class I railroads, this rule references the tradition of "right hand" running on double track (or more) main lines.

  7. Pulse code cab signaling - Wikipedia

    en.wikipedia.org/wiki/Pulse_code_cab_signaling

    The system is in service on the Metra Rock Island District between Blue Island and Joliet. Rapid Transit Lines: Various rapid transit lines built or re-signaled in or before the 1990s make use of the pulse-code cab signal technology for both manual or automatic train operation schemes. Rapid transit systems are typically failsafe with a 0 code ...

  8. Federal Signal Company - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Company

    The Federal Signal Company was an American manufacturer of railway signaling equipment in the early 20th century. It was located in Albany, New York . The company had been founded in 1905 as the Federal Railway Signal Company by former employees of the Standard Signal Company (Arlington, New Jersey). [ 1 ]

  9. Railway semaphore signal - Wikipedia

    en.wikipedia.org/wiki/Railway_semaphore_signal

    The first reached by a train is known as the home signal. The last stop signal, known as the starting or section signal, is usually located past the points etc. and controls entry to the block section ahead. The distance between the home and starting signals is usually quite short (typically a few hundred yards), and allows a train to wait for ...