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| signalling layouts? 02/06/2012 at 18:39 #32718 | |
dbrb2
21 posts |
Hi, Do you know if there is any publicly available dataset from which signalling track layout diagrams can be obtained? It looks like NR may be about to release some realtime data feeds, and if said layouts already existed it would make the job of visualizing the data fare easier! Log in to reply |
| Re: signalling layouts? 02/06/2012 at 18:42 #32719 | |
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Stephen Fulcher
2027 posts |
As far as I am aware there is not. I work for NR on the S&T and find locating such data difficult! Log in to reply |
| Re: signalling layouts? 02/06/2012 at 18:54 #32720 | |
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Sacro
1171 posts |
http://www.signallingnotices.org.uk/ and http://www.s-r-s.org.uk/ Are two of my main go-to sites for signalling diagrams, followed by image sites like flickr. Log in to reply |
| Re: signalling layouts? 02/06/2012 at 19:19 #32721 | |
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guidomcc
246 posts |
not sure if this is what you're looking for.. well worth the wait for each one to download. i've lost a lot of time in these B) Log in to reply |
| Re: signalling layouts? 02/06/2012 at 21:23 #32726 | |
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Sacro
1171 posts |
" said:not sure if this is what you're looking for.. well worth the wait for each one to download.They (sort of) cover track layout, but not signalling. Log in to reply |
| Re: signalling layouts? 03/06/2012 at 13:10 #32737 | |
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dbrb2
21 posts |
Cheers everyone. A few basic questions to ensure I am interpreting the data correctly: Will every signal have an associated berth, or only some? An TD in a berth will mean that the block protected by the associated signal is occupied That block may consist of 1 or more track circuits Is there any publicly available geographic lookup table from signal names to coordinates? Just trying to work out the best way to use this feed. Knowing which signal a train is at means very little without context :-) Log in to reply |
| Re: signalling layouts? 03/06/2012 at 15:42 #32742 | |
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Sacro
1171 posts |
Not all signals have associated berths, and one signal may have more than one berth (such as platform signals) No, there's no reason why a TD in a berth means that the block in advance of the signal is occupied. (I think you've got your head confused with that question however) No, it could have axle counters, or be manually handed forward by a signalman in an AB area. Log in to reply |
| Re: signalling layouts? 03/06/2012 at 16:18 #32743 | |
Steamer
3924 posts |
" said:An TD in a berth will mean that the block protected by the associated signal is occupied Sacro said: No, there's no reason why a TD in a berth means that the block in advance of the signal is occupied. (I think you've got your head confused with that question however)The TD in the berth will apply to the train in the block in the rear (i.e. approaching) of the signal. "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 |
| Re: signalling layouts? 05/06/2012 at 13:57 #32779 | |
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Sacro
1171 posts |
" said:Which is protecting the block in advance. Log in to reply |
| Re: signalling layouts? 05/06/2012 at 14:17 #32785 | |
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Lardybiker
771 posts |
Or it maybe not at all...You can have a berth with no train at all if the signaller interposes one.
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| Re: signalling layouts? 05/06/2012 at 14:26 #32788 | |
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Stephen Fulcher
2027 posts |
Likewise, it is also possible to have a train with no berth at some signals. In many ways, there is not a direct correlation between trains and train describers. It is possible in more way than one for a train to go from signal to signal without the description stepping up, and indeed not every signal is even related to a berth, whilst some signals have more than one berth. In reality, signalmen can also manually step descriptions forward from berth to berth, regardless of the position of trains, and train describer berths are also used for reminding the signalmen of a certain issue in that area - for example "*T3*" is common for a possession, "*T2* or "BLOK" for the old T2 and new Line Blockages, "2CAR" or "3CAR" etc. for stabled units. Log in to reply |
| Re: signalling layouts? 05/06/2012 at 16:29 #32809 | |
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mfcooper
707 posts |
" said:In reality, signalmen can also manually step descriptions forward from berth to berth, regardless of the position of trains, and train describer berths are also used for reminding the signalmen of a certain issue in that area - for example "*T3*" is common for a possession, "*T2* or "BLOK" for the old T2 and new Line Blockages, "2CAR" or "3CAR" etc. for stabled units.For the LOROL units that stable at Euston overnight, you can watch the Wembley signaller put "1378" into a middle siding TD berth, then "2378", then "3378", etc. I believe there are at least 4 or 5 put in there over night. I've also seen lots of different things in the TD berths. From "TREE" and "STIK", to "NOGO", "-LB-", "*ISO", "*S-T", *insert name of S&T technician* eg: "LUKE" to some weirder ones like, in 2 adjacent berths, "VERB" "OTEN". Someone at Liverpool St IECC must have been practising their German! Log in to reply |
| Re: signalling layouts? 05/06/2012 at 16:34 #32810 | |
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Stephen Fulcher
2027 posts |
I know with the advent of CCF and therefore the ability of controllers and others to observe what was in the train describer berths some Signalmen were known to have got a lecture about some of the things that appeared in there!
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| Re: signalling layouts? 05/06/2012 at 17:55 #32821 | |
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button_pusher
56 posts |
The S&T can also interpose into TD berths from the techs terminal. We can also simulate trains to test "stepping tables" in the event of a fault (we tell the TD computer that the TC has occupied/route set/points moved to step the description).
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