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| black NX buttons with letters on (Manchester Piccadilly SC) 29/11/2014 at 22:42 #65893 | |
john_s
31 posts |
Whilst studying Llangollen Signalman's pictures of Manchester Piccadilly SC on flickr, I noticed some black buttons with letters on. There are several in this image: https://www.flickr.com/photos/llangollen_signalman/13088350145/in/set-72157642212559905 at Salford Crescent (lettered O) and near Agecroft South Junction (lettered S and T). What are these? This webpage http://vinchad.blogspot.co.uk/2013/03/a-visit-to-manchester-piccadilly.html also has some good views of the panel, and shows some lettered buttons in the Ardwick Junction area. Log in to reply |
| black NX buttons with letters on (Manchester Piccadilly SC) 29/11/2014 at 23:02 #65895 | |
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Firefly
521 posts |
They look like alternative route buttons. Looks like you can route from 303 signal via 2310 normal or reverse to get to the same destination.
Log in to reply The following user said thank you: john_s |
| black NX buttons with letters on (Manchester Piccadilly SC) 29/11/2014 at 23:19 #65896 | |
belly buster
368 posts |
Another question on the same set of photos. There one signal marked "wrong route signal". Does this means that it's susceptible to signalers routing incorrectly? Log in to reply |
| black NX buttons with letters on (Manchester Piccadilly SC) 30/11/2014 at 09:36 #65902 | |
Steamer
3927 posts |
" said:Another question on the same set of photos. There one signal marked "wrong route signal".Quite possibly, most of the traffic on the Down Slow is through traffic for Platform 14, but some of it terminates at Piccadilly. "Don't stress/ relax/ let life roll off your backs./ Except for death and paying taxes/ everything in life.../ is only for now." (Avenue Q) Log in to reply |
| black NX buttons with letters on (Manchester Piccadilly SC) 30/11/2014 at 13:38 #65907 | |
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john_s
31 posts |
Firefly wrote Quote:They look like alternative route buttons. Looks like you can route from 303 signal via 2310 normal or reverse to get to the same destination.which makes sense for those labelled B, C, S and T (thank you!). But what about those labelled O at Salford Crescent? - alternative routes do not seem to exist here. Log in to reply |
| black NX buttons with letters on (Manchester Piccadilly SC) 30/11/2014 at 13:56 #65908 | |
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Steamer
3927 posts |
" said:Firefly wrote Quote:TC override perhaps?They look like alternative route buttons. Looks like you can route from 303 signal via 2310 normal or reverse to get to the same destination.which makes sense for those labelled B, C, S and T (thank you!). But what about those labelled O at Salford Crescent? - alternative routes do not seem to exist here. "Don't stress/ relax/ let life roll off your backs./ Except for death and paying taxes/ everything in life.../ is only for now." (Avenue Q) Log in to reply |
| black NX buttons with letters on (Manchester Piccadilly SC) 01/12/2014 at 21:23 #65930 | |
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clive
2738 posts |
I'm not convinced about the Agecroft South Junction ones. There aren't alternative routes to the same signal; you'd have to set the route via 514 signal in two stages. I could just about imagine the S one is a mandatory via to stop a signaller making a mistake, but the T one doesn't make sense to me.
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| black NX buttons with letters on (Manchester Piccadilly SC) 01/12/2014 at 21:47 #65931 | |
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Steamer
3927 posts |
" said:I'm not convinced about the Agecroft South Junction ones. There aren't alternative routes to the same signal; you'd have to set the route via 514 signal in two stages. I could just about imagine the S one is a mandatory via to stop a signaller making a mistake, but the T one doesn't make sense to me.There's two options from 1221 signal at the exit of the GM Waste siding to 515: straight down the main siding or round the loop. "Don't stress/ relax/ let life roll off your backs./ Except for death and paying taxes/ everything in life.../ is only for now." (Avenue Q) Log in to reply |
| black NX buttons with letters on (Manchester Piccadilly SC) 02/12/2014 at 06:46 #65976 | |
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clive
2738 posts |
" said:" said:Oops, I didn't notice that! Thanks.I'm not convinced about the Agecroft South Junction ones. There aren't alternative routes to the same signal; you'd have to set the route via 514 signal in two stages. I could just about imagine the S one is a mandatory via to stop a signaller making a mistake, but the T one doesn't make sense to me.There's two options from 1221 signal at the exit of the GM Waste siding to 515: straight down the main siding or round the loop. Log in to reply |