A signal cantilever manufactured by Safetran for use on railroads in the United States. The Tri-Light signal is a common configuration found on the Eastern Seaboard. US&S, GRS (General Railway Signal), and Safetran are a few companies who've designed various models of Tri-Light signal.
This signal bridge features two dual-head signals on a single cantilever. Such signals can be seen placed at interlockings and switches for sidings to indicate clear and diverging aspects.
#train #signal #infrastructure #trackside #railroad
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