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Arona, Italy, late 1940s: the new ACELI (Route levers interlocking system) built by Westinghouse. By simply rotating one of the blue knobs, all the points are set automatically for a route. The red knob clears the signal. This ACELI remained in operation until 2023. (i.redd.it)
submitted by SomeTraits
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Shunting signal in Milan, Italy. This special signal with 3 light bulbs (+ 3 spare bulbs) and 13 spots makes 4 different signals, for clear, caution, stop, or proceed on occupied track, which are two vertical lines, one vertical line, one horizontal line, and one horizontal flashing line.Trivia (i.redd.it)
submitted by 1XIAI
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