Signals for dummies

[NW Mailing List]

This is a typical signal at the end of a CTC siding.  The high signal at the left governs the main line; the lower signal at the right governs the siding.  At the other end of the siding the higher signal would be on the right, or main line, side.  

The opposing signal beyond the switch would be equipped to show clear and approach for trains going up the main, and a diverging approach for a train entering the siding; in a special application it might be able to display a “restricting” indication to allow a movement into an occupied siding..  If no route is lined up, it would display “stop and stay”.  

Ed King

From: NW Mailing List 
Sent: Monday, July 14, 2014 11:12 AM
To: 'NW Mailing List' 
Subject: Signals for dummies

A signal like the one in the attached photo is/was positioned at the end of the siding at Tacoma, VA (visible as you are leaving the siding and going back onto the single track main).  I’m interested in understanding how it would be used and what the signal at that location coming from the other direction would look like and how it is used.

 

I’d also be interested in any documentation explaining (again for dummies) the various aspects and the rules associated with them.

 

Carl Woods

Richmond, VA

 



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