multi-blade semaphore

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Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… … Wikipedia
North American railroad signals — Main article: North American railway signaling Baltimore and Ohio Railroad Color Position Light bracket masts at Magnolia, West Virginia North American railroad signals generally fall into the category of multi headed electrically lit units… … Wikipedia
Itanium — 2 processor Produced From mid 2001 to present Common manufacturer(s) Intel Max. CPU c … Wikipedia
Lest Darkness Fall — First edition c … Wikipedia

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