middle siding signals

NW Mailing List nw-mailing-list at nwhs.org
Wed Apr 19 08:26:02 EDT 2017


     A restricting signal indicates the right to proceed at a 
restricting speed. That aspect does not deal with geography, it deals 
with trains ahead and track circuit continuity. It sits one position 
above "stop and proceed", which only deals with trains ahead - you must 
stop and then proceed at a restricting speed. Below that is "stop and 
stay". If there is a yellow plate with the letter "G" on it below the 
signal head displaying "Stop and stay" on the mast, a train on an 
ascending grade can pass the signal without the stop, ready to stop 
short of a train ahead. All the above very fine delineations of keeping 
your speed safely in check.

     From the photo, I cannot tell what track the furthest EB signal 
controls. If it has a dummy mast to one side of it, it may control the 
center siding, and most likely be like an interlocking home signal and 
not have any aspect allowing a stop and proceed.

     Wm J Powers

On 4/19/2017 6:54 AM, NW Mailing List wrote:
> I believe the attached photo may show the West end of the middle 
> siding at Villamont (confirmation would be appreciated).  My question 
> concerns the East-bound signals that are visible.  The signal for the 
> East-bound main is capable of displaying the RESTRICTING aspect while 
> the one for the West-bound main is not.  In my understanding, one 
> reason for the RESTRICTING aspect was to allow a train to proceed 
> without coming to a complete stop on  a grade where it might have been 
> very hard to start again.  Since this stretch is signalled for 
> bi-directional running, why would the signal for the West bound main 
> not also be capable of showing RESTRICTING?  It seems like the grade 
> would have been the same for East-bound movements regardless of which 
> main they were using.  Any thoughts?
> Thanks, Jim Cochran
> Moderator:
> http://www.nwhs.org/mailinglist/2017/20170419.midpasside.jpg
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