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Greetings, I've been trying to figure out what lights (signals) would be good for my layout. I've been observing the ones in my area but I don't quite understand them and what they mean. Could someone please explain dwarf signals, tower (bridge) and other signals to me? I know they have Red, Yellow and green as options but what does each color mean and what are the usual applications for them? Thanks a bunch! -Dale
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