Posted by Jeff Sell on January 8, 2016  Thanks for the interesting signal history lesson. Posted by Marc on January 8, 2016  Great shot of a real different sign bridge. Nice effect too. Posted by John Ireland on January 10, 2016  The red lenses, or "snake eyes," are installed only on absolute signals. Any permissive signal installed during the PC or CR eras would have all yellow lenses.

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