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  2. North American railroad signals - Wikipedia

    en.wikipedia.org/.../North_American_railroad_signals

    The first signals employed on an American railroad were a system of flags used on the Newcastle and Frenchtown Turnpike and Rail Road in the 1830s. The railroad then developed a more effective system consisting of wooden balls, painted red, white or black, and hoisted up or down a pole on a rope-and-pulley system.

  3. North American railroad signaling - Wikipedia

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

    Signal aspect and indication illustrations instead appear in each railroad's system special instructions or operating timetable for the region or division where the aspects and indications apply. This practice is necessary due to the lack of uniformity in aspects between the multitude of railroads participating in GCOR, which includes a number ...

  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. 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 ...

  6. Railway signalling - Wikipedia

    en.wikipedia.org/wiki/Railway_signalling

    A Class 66 locomotive (right) is waiting at a red signal while a First Great Western (now Great Western Railway) passenger train (left) crosses its path at a junction. Railway signalling (BE), or railroad signaling (AE), is a system used to control the movement of railway traffic.

  7. Glossary of North American railway terms - Wikipedia

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

    Signals made by the Pennsylvania Railroad that make use of a circular disc with up to eight lights mounted in a circle, with one light in the center. The lights would line up in a straight line to give the indication. [194] [195] Power Move (PM) When multiple locomotives move within a place to get to another without railcars [citation needed]

  8. Category:Railway signaling in the United States - Wikipedia

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

    North American railroad signals; Northeast Operating Rules Advisory Committee; S. Signaling of the New York City Subway; T. Taylor Signal Company-General Railway ...

  9. Pulse code cab signaling - Wikipedia

    en.wikipedia.org/wiki/Pulse_code_cab_signaling

    SEPTA cab signal display for the 4-aspect PRR system using position light aspects. Pulse code cab signaling is a form of cab signaling technology developed in the United States by the Union Switch and Signal corporation for the Pennsylvania Railroad in the 1920s.