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Sun Sep 4 16:07:01 EDT 2022
So by first admission, I'm no expert, so take anything I might offer with a grain of salt. My guess here is that this was indeed a "stop and proceed" only indication, but one that was originally (if not still, in 1980) a PL signal, rather than a CPL. A position light would still have the center lense for a stop and proceed indication. Perhaps this signal never had the center lens position removed when converted to CPL ( if it was converted. I can't see anything lit in the linked photo)
Dr. J. Brent Greer
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Sent: Sunday, September 4, 2022 12:36 PM
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On Ebay for a few more hours is the following:
It appears to show a single-armed CPL with only the three horizontal positions occupied. I don't believe I've seen this configuration before. It would seem the signal could only indicate stop and proceed, but there would be no need for the center position.
Any thoughts/speculations as to the purpose of the signals or the location would be greatly appreciated.
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