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Author Topic: Open Train Times live signalling maps  (Read 34777 times)
a-driver
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« on: May 03, 2015, 01:06:39 pm »

OpenTrainTimes have recently launched some live signalling maps featuring some Great Western routes, namely Paddington, Southall to Stockley, Reading to Cholsey and Didcot Parkway to Banbury.

Very useful if you want to check the location of a train or you're sitting in a queue of delayed train following a signal failure.

http://www.opentraintimes.com/maps
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Adelante_CCT
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« Reply #1 on: May 03, 2015, 06:12:03 pm »

I know this is just up and running so mistakes will always occur but on the Reading Map I've noticed a couple of errors, signal 1743 on the down main appears to have a connection on to the festival line after it, I don't believe this is true, also if you were heading west on the Feeder Main there should be a crossover to the Feeder Relief just before Oxford Rd Junc
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W5tRailfinder
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« Reply #2 on: May 03, 2015, 07:42:16 pm »

They are 2, I have already noticed. There's another couple of minor problems I have noticed, but I was going to wait until there was a service on all lines before informing Peter Hicks.

There is a problem with the Southall map at the moment, already notified, where the signal aspects have gone awry. This is most probably due to the re-signalling that has been going on in the area.
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Phil Farmer
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« Reply #3 on: June 08, 2015, 03:20:49 pm »

Just started yesterday - open train times has installed the live version of the Swindon area track plan

http://www.opentraintimes.com/maps/signalling/swindon
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BerkshireBugsy
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« Reply #4 on: June 08, 2015, 03:38:26 pm »

I was playing with this earlier on (having only learnt about it over the weekend from this forum). I brought up the  Reading map and click on a service which was in P1 at the time and it brought up a service from Euston Smiley

Maybe just teething troubles but I think whoever has put this together has done a great job!

« Last Edit: June 08, 2015, 05:18:23 pm by BerkshireBugsy » Logged
tomL
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« Reply #5 on: June 08, 2015, 05:16:10 pm »

Can now follow my whole journey from Swindon to Oxford, which is pretty cool.  Grin

Also shows the track fault that is causing express trains to call at Platform 3 at Didcot, with the berth to 0952 closed (asked about in another thread).
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patch38
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« Reply #6 on: June 08, 2015, 05:49:24 pm »

But no clue why the line is currently closed between Swindon and Didcot! (17:45 on Monday)

[EDIT] - scratch that - it's a 24-hour old tweet from @FGW!  Embarrassed

But there is something going on: 1L80 seems to have been held outside Swindon for 20 minutes or so...
« Last Edit: June 08, 2015, 05:55:00 pm by patch38 » Logged
BerkshireBugsy
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« Reply #7 on: June 08, 2015, 06:00:00 pm »

I've just looked at Open Train Times and it shows 2N52 on P4 at Didcot - when I click on that headcode it shows a service from London Victoria to Ashford International...am I missing something here?
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Adelante_CCT
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« Reply #8 on: June 08, 2015, 06:44:25 pm »

I've noticed occasionally on the Reading diagram that signals will turn from green to red without any train being shown on the Map eg: A train has allegedly gone into P10 so I have a look on RTT to find that '1A01' has actually just arrived into P10. I then look further down the line on the OTT map to see '1A01 only passing through Tilehurst. I then look back onto RTT to see that this unit passing Tilehurst is in fact '2B02' so it seems the OTT map system doesn't quite register every train correctly.
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paul7755
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« Reply #9 on: June 08, 2015, 07:05:41 pm »

I've just looked at Open Train Times and it shows 2N52 on P4 at Didcot - when I click on that headcode it shows a service from London Victoria to Ashford International...am I missing something here?


Seems the designer of OTT has not designed the link from the signalling display to account for the 4 character train IDs not being unique, across the country, there's about 87 x 2N52s in the list his search system shows up:   http://www.opentraintimes.com/schedule/search?commit=Search&page=4&q%5Bc%5D%5B1433786431605%5D%5Ba%5D%5B0%5D%5Bname%5D=train_identity&q%5Bc%5D%5B1433786431605%5D%5Bp%5D=eq&q%5Bc%5D%5B1433786431605%5D%5Bv%5D%5B0%5D%5Bvalue%5D=2N52&utf8=✓   

Paul
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W5tRailfinder
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« Reply #10 on: June 08, 2015, 09:22:11 pm »

As a long time user of OTT, I can report that it is normally real time, only a few seconds delay. There was an error last week, now fixed, which introduced a delay. (see Blog at bottom).

The maps are only reporting what the data feed from Network Rail signalling centre is providing (TVSC in the case of GW). Each signalling element is represented by 1 bit (ie 0 = red, 1 = green) in the feed. If you want to read about the technicalities of it go to the Open Rail Data Wiki, but you need a good understanding of binary.

Peter Hicks, the developer, does this as a hobby. I have reported to him the faults with the Reading map, but he has obviously been busy creating the new maps to correct them.

I normally watch OTT in one window and RTT in another just for time tabling info, and as I said in the Reading thread RTT cannot be relied upon for the actual routeing and platform allocations.
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Poggs
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« Reply #11 on: June 08, 2015, 09:53:34 pm »

Hello, it's Peter here - I run OpenTrainTimes.

As a long time user of OTT, I can report that it is normally real time, only a few seconds delay.

I measured it as less than two seconds between a signal changing from a proceed aspect at Putney this evening, and the map on my phone updating.  That's really quite fast!

Peter Hicks, the developer, does this as a hobby. I have reported to him the faults with the Reading map, but he has obviously been busy creating the new maps to correct them

I have the faults logged in Jira, I just need to find some time to sit down and work on them - OpenTrainTimes is my hobby, I don't make a penny from it and I spent an inordinate number of hours working on it, keeping the Open Rail Data wiki up-to-date and replying to messages on the openraildata-talk mailing list.  I'm surprised I have time to eat...!
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Poggs
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« Reply #12 on: June 08, 2015, 09:55:52 pm »

Seems the designer of OTT has not designed the link from the signalling display to account for the 4 character train IDs not being unique, across the country, there's about 87 x 2N52s in the list his search system shows up

It's not quite that straightforward - there are 87 instances of a 2N52, but I take in to account the location the train originates, and I also try to 'hand over' data between train describers (there can be three train describers reporting the same train in the same berth in some places around Upminster) - but it's not currently perfect and sometimes mis-links trains.

I'm working on a better solution - either I need to improve the fuzzy matching I do, or I need to nail it down and make it accurate, but liable to break when train describer configurations change, as they do regularly.
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Network SouthEast
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« Reply #13 on: June 08, 2015, 10:03:20 pm »

Welcome to the forum Poggs  Smiley
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BerkshireBugsy
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« Reply #14 on: June 09, 2015, 06:17:42 am »

Welcome to the forum from me and a big thanks for the work you have done on OTT

Maybe one day I will see my line (from Reading through Thatcham) - I believe it goes as far as southcote Jn at the moment

Once again many thanks
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