1930's LMS Absolute Block Semaphore Signalling- Part 1

LMS instructional Railway video "Sentinels of Safety" outlining the Absolute Block Signalling principle. Recorded some time in the 1930's. Features lots of LMS signal boxes and the staff that used to work them. A fantastic piece of railway history.

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YouTube | December 19, 2009

Tags:. .YouTube. .semaphore. .lms. .outlining. .sentinels