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Post by domh245 on Feb 12, 2013 16:35:15 GMT
2 things to ask you today, you lot in the know
1 - Why have the indicator boards (the LED Displays that show how long to the next train and it's destination) stopped showing the time.
2 - What on earth are those weird grey boxes they have installed between the two tracks, I'm guessing they are something to do with the signalling upgrade, but that is a while yet.
Thanks for your responses!
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Post by littlebrute on Feb 12, 2013 16:55:56 GMT
If it's any consolation, at Northwick Park southbound we have to hope it's not a long wait for the next train due to a train rarely showing up on the board
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rincew1nd
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Post by rincew1nd on Feb 12, 2013 18:49:37 GMT
What on earth are those weird grey boxes they have installed between the two tracks, I'm guessing they are something to do with the signalling upgrade, but that is a while yet. Are these the same kind of thing that appeared on the Met Line shortly before the S Stock did? |
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metman
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Post by metman on Feb 12, 2013 19:08:43 GMT
Yes the end is nigh for proper trains on the District! ;D
In all seriousness though, there was a thread some years ago that explained the reason for the grey boxes. I believe they are some sort of beacon to detect the trains - but I could be wrong, it was a looong time ago!
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rincew1nd
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Post by rincew1nd on Feb 12, 2013 19:23:38 GMT
I was under the impression it was the opposite, they were a beacon for the train to detect the station, SDO and all that jazz.
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metman
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Post by metman on Feb 12, 2013 19:57:54 GMT
Dunno! You may well be right! I never really understood what they did (do) at the time.
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Post by melikepie on Feb 13, 2013 14:36:59 GMT
I was under the impression it was the opposite, they were a beacon for the train to detect ... all that jazz. This future technology amazes me. What other music can the equipment detect or is it only limited to the likes of Louis Armstrong etc? |
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Post by trt on Feb 13, 2013 18:51:21 GMT
I was under the impression it was the opposite, they were a beacon for the train to detect ... all that jazz. This future technology amazes me. What other music can the equipment detect or is it only limited to the likes of Louis Armstrong etc? Well, in case of snow, ice, excess leaf fall, etc. the system transmits a Rail Adhesion Governance signal, so the service runs on RAG time instead.  |
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Deleted
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Post by Deleted on Mar 2, 2013 3:05:38 GMT
the departure boards at fulham broadway have been broken for as long as i've lived in london. the eastbound boards often shows the wrong destination and time.
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gantshill
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Post by gantshill on Mar 2, 2013 9:41:22 GMT
The departure DMI at East Putney is also often incorrect, showing Edgware Road for a City train and vice versa. I rely on the stock to let me know the route after Earl's Court. I'll have to start paying attention once the S-stock are introduced.
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Post by domh245 on Mar 2, 2013 11:00:55 GMT
Most of the DMIs on the Wimbledon Branch are "defective". Its often humourous to hear the =driver announce "this train is actually for Barking via the city" and then seeing lots of people scamper off quickly!
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Post by Deleted on Mar 3, 2013 12:02:42 GMT
The DMI at Fulham Broadway has a defective cable hence why its not working there is a political battle to state who owns the cable hence why its not been fixed yet. Also the TD system on the Wimbledon branch west of Putney Bridge is not as sophisticated like LU's system. It basically has 2 codes CITY and EDGWARE ROAD when the train arrives at WG3 (E/B Starter Putney Bridge) the programme machine or signaller depending what mode they are in will set the correct code i.e Barking, High St Ken etc I believe this is from the days when the WARS system was programmed. A known issue is when the syetem goes down all descriptions on the dot matrix signs will show 8mins even though you can see the train. Hence People with access to Trackernet and certain apps for phones wont see the correct TD until the train is half way between Putney Bridge and Parsons Green. On the W/B there is no TD so to speak as when the train is routed into the W/B platform at Putney Bridge the programme machine (generally left in FCFS) will just clear the signal at its booked time regardless of the TD sent from Parsons Green and when it gets transmitted further down the signaller for Wimbledon will just see the train as a District Line.
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Post by domh245 on Mar 3, 2013 12:25:52 GMT
Originally I was talking about the fact that we would be told "THERE IS A TRAIN" but we wouldn't be told how long it was, it would literally say
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etc, although this has been fixed. But it is interesting to learn about this other problem (which I trust is mostly to do with the E/B DMI, which rarely gives you the correct destination.
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Deleted
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Post by Deleted on Mar 3, 2013 12:47:06 GMT
Correct indeed it only applys to the E/B sorry forgot to mention that.
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Deleted
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Post by Deleted on Mar 3, 2013 17:21:27 GMT
Ie made some enquiries and there has been a fault between Parsons Green and Earls Court with the TD equipment for over a year. This sends trains with when it feels like it an incorrect TD or no TD. This is then corrected at Earls Court.
Putney Bridge eB should be left in Programme Only to generate the TD from the number as it does like to out up Parsons Green for no reason.
As mentioned earlier it is not helped so I'm told by faults being close without investigation. So they happen again. And again.
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Deleted
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Post by Deleted on Mar 4, 2013 7:23:56 GMT
I can ensure you all faults are investigated and resolved asap.
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Deleted
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Post by Deleted on Apr 4, 2013 9:14:23 GMT
In that case, the various long-standing DMI issues must be down to what constitutes a fault. Presumably it is only incorrect or missing destination information, rather than inaccuracies or limited info.
For example Hammersmith EB timings have been way out for years (each minute is much longer than a minute) and the WB destination usually only appears once the train is visible from the back of the station, when clearly more info is available on a mobile phone.
It's still better than the info available at West Ken, of course!
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Deleted
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Post by Deleted on Apr 5, 2013 18:49:11 GMT
The info you get on a mobile phone is fed via Trackernet the info on most of the DMI's these days are fed from the old TD system. Hammersmith is fed from the TD system and can change from the signalman depending what mode the programme machine is in. The destinations at Hammersmith W/B come up when the train has left Barons Court. West Kensington has the equipment to have a sign but it seems one wasn't installed
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Post by coyote on Apr 5, 2013 21:22:28 GMT
How does trackernet get its TD info that gets displayed on mobile phone apps etc?
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