N&W signal route diagrams

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They actually do have a way to allow a train to pass a Stop signal.
Either directly by dispatcher instructions and being governed
accordingly by the operating rules, or by configuring the signal to
display a Restricting.  The majority of controlled signals don't have
that capability because it is just not necessary in most cases.

Ben-

Talking GRS and searchlight signals and dwarf signals here -- not PLs, CPLs,
or Union.  At Tidewater on Norfolk Terminal, there was a siding (unsignaled) off
the VGN's eastbound main track.  Bear in mind that when a movement is
anywhere within the interlocking, the leverman can't manipulate the switches.
Hand-throw switches are locked in place.

So to spot a car, a crew had to clear the interlocking (which included  the NS's
Beach District diamond),  the crew had to line the switch for the siding, then
the leverman could give a signal to cross the diamond and enter the siding.  What
was the indication ?  I have no idea.  All you see on the track panel is a light indi-
cating the movement can proceed.                Harry Bundy

 

 

 
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