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Yellow shunt signals

British signalling of the past (UK, excepting Northern Ireland)

Unread postby Tulyar15 » Wed Oct 15, 2008 7:37 am

Keith wrote:
SDL wrote:No, not necessarily. For example:

Now there's a station that's a mere shadow of its former self!! I remember having used all five platforms, with the possible exception of the northernmost one. First it went down to four platforms, maybe three for a time(?), then two, and now there's only one. :(


where are you talking about? I don't see a name on the above diagram, only a "CN" prefix on the signals. Please clarify.
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Unread postby Alan Norris » Wed Oct 15, 2008 7:42 am

Tulyar15 wrote:
Keith wrote:
SDL wrote:No, not necessarily. For example:

Now there's a station that's a mere shadow of its former self!! I remember having used all five platforms, with the possible exception of the northernmost one. First it went down to four platforms, maybe three for a time(?), then two, and now there's only one. :(


where are you talking about? I don't see a name on the above diagram, only a "CN" prefix on the signals. Please clarify.


A guess - CN + pier + Keith = Craigendoran?


http://ccgi.ewanbeth.force9.co.uk/cgi-bin/images/location.php?loc=Craigendoran

http://en.wikipedia.org/wiki/Craigendoran_railway_station
Last edited by Alan Norris on Wed Oct 15, 2008 2:11 pm, edited 1 time in total.
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Unread postby StevieG » Wed Oct 15, 2008 11:50 am

SDL wrote:No, not necessarily. For example:

This 'multiple yellow shunt signals' idea also continued into early position-light days, as I remember, pre-current Crewe signalling, seeing a Crewe South Junction, double, vertically-stacked, yellow/white GPL signal at the north exit from the south carriage shed : The 'straight-ahead' route was, I think, really quite short onto a buffer stop - one loco-length only perhaps.
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Unread postby Benhar Jnc » Wed Oct 15, 2008 2:54 pm

SDL wrote:
Benhar Jnc wrote:Tonight's daft laddie question - Does a yellow on white (or yellow on black) ground signal always appear as a single unit

No, not necessarily. For example:


Thanks for a definitive answer, I just couldn't think of ever having seen a stacked example myself. I've seen the single example at Greenloaning and there was one at Dalwhinnie. Looks like I'm not the only one wondering about the real location of your diagram.
...... another trip working to the Dardanelles
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Unread postby Alan Norris » Wed Oct 15, 2008 2:59 pm

Benhar Jnc wrote:
SDL wrote:
Benhar Jnc wrote:Tonight's daft laddie question - Does a yellow on white (or yellow on black) ground signal always appear as a single unit

No, not necessarily. For example:


Thanks for a definitive answer, I just couldn't think of ever having seen a stacked example myself. I've seen the single example at Greenloaning and there was one at Dalwhinnie. Looks like I'm not the only one wondering about the real location of your diagram.


As above - it's Craigendoran :) :)
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Unread postby Tulyar15 » Wed Oct 15, 2008 3:19 pm

OK, thanks for confirming the location.
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Unread postby Benhar Jnc » Wed Oct 15, 2008 5:10 pm

Interesting that locations as far apart as Crewe and Craigendoran featured stacked yellow on white ground signals.
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Unread postby SDL » Wed Oct 15, 2008 5:19 pm

StevieG wrote:This 'multiple yellow shunt signals' idea also continued into early position-light days, as I remember, pre-current Crewe signalling, seeing a Crewe South Junction, double, vertically-stacked, yellow/white GPL signal at the north exit from the south carriage shed

There was a triple yellow PLS at the south end of Crewe, but not stacked in the usual way. Look at the exit signals from "No.2 Stop Block":

Image
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Unread postby SDL » Wed Oct 15, 2008 6:17 pm

Benhar Jnc wrote:Interesting that locations as far apart as Crewe and Craigendoran featured stacked yellow on white ground signals.

I can push the northern extremity a bit further. There used to be a two-armed miniature yellow semaphore signal at Connel Ferry. I have a recollection of seeing a two-tier yellow disc at Inverness (with black background), but I cannot find a diagram or photograph to confirm if my memory is correct.
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Unread postby Benhar Jnc » Wed Oct 15, 2008 7:48 pm

Most interesting post - I'm now waiting to see if someone pops up with an example of a two or three tiered yellow disc on the Southern, or in the South West or Wales?
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Unread postby SDL » Wed Oct 15, 2008 8:02 pm

Benhar Jnc wrote:I'm now waiting to see if someone pops up with an example of a two or three tiered yellow disc on the Southern, or in the South West or Wales?

You'd be doing very well even to find a red stacked disc on the Southern. :?
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Unread postby StevieG » Wed Oct 15, 2008 8:15 pm

SDL wrote:
StevieG wrote:This 'multiple yellow shunt signals' idea also continued into early position-light days, as I remember, pre-current Crewe signalling, seeing a Crewe South Junction, double, vertically-stacked, yellow/white GPL signal at the north exit from the south carriage shed

There was a triple yellow PLS at the south end of Crewe, but not stacked in the usual way. Look at the exit signals from "No.2 Stop Block":

Image

Very interesting!
An unexpected arrangement, but certainly logical with the route 'to which it does not apply' being near-central rather than the route most extreme to the left, or (as in the Craigendoran diagram) the right.
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Unread postby Chris Osment » Wed Oct 15, 2008 8:40 pm

You'd be doing very well even to find a red stacked disc on the Southern.


True - but the L&SWR used to put them side-by-side instead :) And the Southern did so at Exeter Central.
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Unread postby StevieG » Wed Oct 15, 2008 8:53 pm

SDL wrote:
Benhar Jnc wrote:I'm now waiting to see if someone pops up with an example of a two or three tiered yellow disc on the Southern, or in the South West or Wales?

You'd be doing very well even to find a red stacked disc on the Southern. :?

.... Same on the ex-GNR routes of the LNER & BR(ER) (York policy?), where the great majoriy of disc sites were just singles, reading to all routes (I knew at least one that went 5 ways). Where there was occasionally more than one, they seem to like mounting them side by side where possible, in preference to stacking.
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Unread postby SDL » Wed Oct 15, 2008 9:02 pm

True - but the L&SWR used to put them side-by-side instead :) And the Southern did so at Exeter Central.

And you can still see three discs side by side at Laurencekirk:

Image

(We'll be getting a row soon for drifting off topic)
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