I have while trying to get grips with what makes a railway Irish ,come across pictures of twin armed semaphore signals that appear to be guarding level crossings.
How common was this and how are they operated they never seem to show a operating lever or signal wire in the picture, also are they co acting arms ie both move together showing same position.
Are they painted different colors to standard signals.
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Buz
Hi all
I have while trying to get grips with what makes a railway Irish ,come across pictures of twin armed semaphore signals that appear to be guarding level crossings.
How common was this and how are they operated they never seem to show a operating lever or signal wire in the picture, also are they co acting arms ie both move together showing same position.
Are they painted different colors to standard signals.
regards John
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