Signal safari part 6

[NW Mailing List]

“D” plate notwithstanding, this signal cannot display anything but an “approach” aspect.  Period.  This is an unsignalled piece of track. There can be a caboose just around the curve, and this thing will still display approach.

The only signal on the Abingdon Branch (its number was A08) was .8 miles south of the junction at Abingdon.  It could display “approach” and “stop and proceed”.  It DID provide block protection between itself and the signal to come out on the siding at Abingdon.  When the northbound branch train passed it, it lit up an indicator light on the Dispatcher’s board so he knew when the train was showing up and could line it into the siding at Abingdon (the Branch junction was at the east end of the siding).

EdKing

From: NW Mailing List 
Sent: Wednesday, August 28, 2013 2:20 PM
To: Norfolk and Western Historical Society Mailing List 
Subject: Re: Signal safari part 6

I'm showing up late to the party but if there is no "D" plate then yes the approach would be providing block protection. Meaning yes you could come out on to the main and you're next signal would be a stop. My guess for not using a restricting is that is usually reserved for entering un-signaled territory, or for a yard movement. Not to mention you don't have to be prepared to stop on a restricting just keep moving at restricted speed.

-Brandon

On Aug 28, 2013 2:06 PM, "NW Mailing List" <nw-mailing-list at nwhs.org> wrote:

  Ed, 
  So are you saying that if the "D" plate weren't there, the signal would show approach and provide block protection in that it would indicate that the block between the signal and the main was unoccupied?  A movement off the branch would still have to be prepared to stop at the next signal.  So if the concern was that there might be another train in the block, wouldn't restricting be more appropriate, since the engineer would have to watch out for anything in the block?



  On Wed, Aug 28, 2013 at 7:56 AM, NW Mailing List <nw-mailing-list at nwhs.org> wrote:

    The signal off the Alma Branch is a fixed approach signal; it can’t even display “stop”.   It tells trains to be prepared to stop at the next signal and that’s all; it conveys no block protection.   

    EdKing

    From: NW Mailing List 
    Sent: Wednesday, August 28, 2013 7:07 AM
    To: NW Mailing List 
    Subject: Signal safari part 6

    Coming to the end of my trip, the first shot is at Blackberry City.  Next is a distant signal for movements entering the main from the Alma branch.  Since a train has not choice of route in this case, why is approach diverging the appropriate aspect for this signal?  Last shot shows main signals at Chatteroy. 
    Jim Cochran


    Moderator:
    http://nwhs.org/wiki/tiki-browse_image.php?imageId=551
    http://nwhs.org/wiki/tiki-browse_image.php?imageId=552
    http://nwhs.org/wiki/tiki-browse_image.php?imageId=553


----------------------------------------------------------------------------
    ________________________________________
    NW-Mailing-List at nwhs.org
    To change your subscription go to
    http://list.nwhs.org/mailman/options/nw-mailing-list
    Browse the NW-Mailing-List archives at
    http://list.nwhs.org/pipermail/nw-mailing-list/ 

    ________________________________________
    NW-Mailing-List at nwhs.org
    To change your subscription go to
    http://list.nwhs.org/mailman/options/nw-mailing-list
    Browse the NW-Mailing-List archives at
    http://list.nwhs.org/pipermail/nw-mailing-list/



  ________________________________________
  NW-Mailing-List at nwhs.org
  To change your subscription go to
  http://list.nwhs.org/mailman/options/nw-mailing-list
  Browse the NW-Mailing-List archives at
  http://list.nwhs.org/pipermail/nw-mailing-list/



--------------------------------------------------------------------------------
________________________________________
NW-Mailing-List at nwhs.org
To change your subscription go to
http://list.nwhs.org/mailman/options/nw-mailing-list
Browse the NW-Mailing-List archives at
http://list.nwhs.org/pipermail/nw-mailing-list/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://six.pairlist.net/pipermail/nw-mailing-list/attachments/20130828/9b14bb54/attachment-0001.html>