I took this photo on a recent family visit to the Illinois Railway Museum, located in Union Illinois. This lighted railway signal from recent decades past, is located just east of the preserved interlocking tower from Spaulding Illinois. Signals that are low to the ground, are refered to as "Dwarf" signals. This one with it's three colored lenses, did what Steam era Semaphore signals did. Notice that there is a Semaphore blade painted on the rotating signal disc. Signals like this, were generally used around large passenger train terminals.
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