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Post by 21146 on Dec 12, 2010 13:04:03 GMT
Presumably sticking the blame on the poor old trains is the new signal engineers way of diverting attention from what they have done that doesn't work. Aren't those of you who work on the line wondering when you will have the first day with normality? As I understand the new signalling system (which I admit I don't very well), what used to be done with lineside signals is now being done onboard the trains. If so then the line between a failure of the train and a failure of the signalling system will be much blurred in comparison to traditionally-operated lines. For example is a failure of communication between the train-bourne box that receives the signals about the position of other trains and the train-bourne box that controlls the train movement a "broken down train" or a "signal failure"? What if a train stops because it isn't receiving details of where the train in front is because the train in front isn't transmitting those details, even though it's proceding at full speed as it's receiving the info about the train in front of it? On the way back from Chesham I noted the Jubilee Line signal heads bagged/covered. Large numbers of passengers on platforms which did not suggest the service was running well, indeed a poster at Baker Street said there would be fewer trains operating due to signalling-testing (hardly filling us with confidence!). When is someone going to bite the bullet and admit this new system isn't working and perhaps will never work properly? Also, I've never understood how a system where the driver spends more time looking down at the console (dashboard in car-speak) for target speeds instead of watching the line ahead can be considered safe.
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Post by Deleted on Dec 12, 2010 13:59:40 GMT
I see that by 1.50 pm on Sunday things have recovered officially to "minor delays".
A quick look at one of the Live Departure boards which is working (most are not) for Bond Street, southbound, shows the next train in 25 minutes, currently at Wembley Park. That's some "minor delay".
I wonder when the decision will be taken to scrap the lot, sue Thales the signalling supplier for billions, and go out to tender again for a different signalling system starting from scratch. The thing patently does not work and is not going to work. It's a real "The Emperor Has No Clothes".
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Post by Deleted on Dec 12, 2010 14:41:55 GMT
On the way back from Chesham I noted the Jubilee Line signal heads bagged/covered. Large numbers of passengers on platforms which did not suggest the service was running well, indeed a poster at Baker Street said there would be fewer trains operating due to signalling-testing (hardly filling us with confidence!). When is someone going to bite the bullet and admit this new system isn't working and perhaps will never work properly? Also, I've never understood how a system where the driver spends more time looking down at the console (dashboard in car-speak) for target speeds instead of watching the line ahead can be considered safe. I would imagine the ATP would have chimes for an upcoming lower target speed... central style.
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Post by Deleted on Dec 12, 2010 14:49:17 GMT
I do wonder when somebody will start to take some responsibility for the ongoing mess.
I noticed in Scotland the transport minister resigned over the way the recent winter weather was handled north of the border.
Meanwhile in London, the leaders within TfL continue to critise the front line staff, refuse to negotiate the cost savings and instead are printing a few posters to apologise yet again of the mess that people pay thousands of pounds per year for.
Is there anybody left who honestly believe that TfL have the right management in place to carry forward the next set of big projects? or have the skills to run a transport system during the Olympics?
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Post by Deleted on Dec 12, 2010 15:58:15 GMT
"A quick look at one of the Live Departure boards which is working (most are not) for Bond Street, southbound, shows the next train in 25 minutes, currently at Wembley Park. That's some "minor delay".
What's actually happening is that the Live Departure Boards are only showing trains on the legacy signalled section between Stanmore and Dollis Hill, so right now for example London Bridge eastbound is showing 29 mins to the "next train" at Dollis Hill Platform 2, whereas in fact there's been quite a regular service all afternoon.
So unless these trains have been disappearing into the fourth dimension, it looks like there's quite a respectable service over the whole line. Which isn't too bad for only the second full(-ish) live trial. Fingers crossed!
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rincew1nd
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Post by rincew1nd on Dec 12, 2010 17:49:13 GMT
I've been mooching around Zone 1 today, and have constantly heard "minor delays on the Jubilee line due to a failed train at Dollis Hill", but then finally a breakthough came: "minor delays due to a signal failure at Willesden Green".
I suspect that the former failures being described as faulty trains is more a political thing than anything; the delays today and yesterday were caused by faulty trains not the signalling system.
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Post by Deleted on Dec 12, 2010 18:41:05 GMT
I suspect that the former failures being described as faulty trains is more a political thing than anything; the delays today and yesterday were caused by faulty trains not the signalling system. Faulty trains yes, but the trains faults could be caused by the new signalling system interfering with the train's equipment, and judging by the fact theyv'e both happened during trial op's then it would seem likely.
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Post by Deleted on Dec 12, 2010 19:01:01 GMT
It appears there have been a few issues with the train on-board signalling computers, the first one being the Dollis Hill reported train failure, and a point problem at Willesden was the signalling problem. The biggest reason for gaps in the service was lack of drivers from what I hear, both yesterday and today, not lack of trains for technical reasons. Was told the aim was for 47 trains out yesterday, but only enough drivers for 36, and similar percentage of 'no drivers' today, so combine that with the odd train or signalling problem would leave the impression its not been very good, when in fact I hear its gone pretty well compared to other weekends.
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Post by Deleted on Dec 13, 2010 0:14:02 GMT
I was a bit disappointed with the speed of the trains into platforms, especially at the PED stations, it seemed the same, if not slower than a manually driven train.
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Post by Deleted on Dec 13, 2010 0:41:03 GMT
The biggest reason for gaps in the service was lack of drivers from what I hear, both yesterday and today, not lack of trains for technical reasons. Not a lack of drivers per se, but a lack of drivers who have completed the requisite "two trips" experience with an instructor. What constitutes a 'trip' is unclear. Why it has been agreed that two is sufficient is also mystifying. And how have such a large minority of drivers not already been given the opportunity to complete this extremely modest target on account of non-availability of instructors over the past six months? Understandably most of the focus has been on the incompetence, cost and tardiness of the 'upgrade' work. But the quite abysmal level of training and practical experience given to operational staff also needs to be addressed. Driving in TBTC is proving to be: slow - you are rarely able to reach the speed you would normally drive at; cumbersome - regularly having to apply brakes when coming up against a seemingly arbitrary speed restriction or if you are close to the train in front; being forced to crawl towards the stopping mark in platforms; distracting - as someone here said, you are using most of your concentration looking at the computer screen and also listening to sounds rather than the track or platform ahead; disorientating - most of us are aware of our location by the sequence of signals and without them it's sometimes hard to keep track of where you are in relation to the next station. You might gather I'm not a fan. Even so, it must be remembered that TBTC is the interim stage of the line going automatic. Automatic Train Operation will be quite different.
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Post by Deleted on Dec 13, 2010 0:48:42 GMT
I was a bit disappointed with the speed of the trains into platforms, especially at the PED stations, it seemed the same, if not slower than a manually driven train. The trains are still manually driven but instead of signals we are effectively being told how fast to drive, when to brake,etc. Trains are crawling slowly into platforms because otherwise we will 'overspeed' and emergency brake. Why the system is not allowing faster berthing in platforms I have no idea!
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Post by Deleted on Dec 13, 2010 13:34:26 GMT
Understandably most of the focus has been on the incompetence, cost and tardiness of the 'upgrade' work. But the quite abysmal level of training and practical experience given to operational staff also needs to be addressed. An interesting observation. It is not unknown in project management that if you get badly delayed in one aspect, like performing the upgrade work here, subsequent stages, such as training, get disorganised, because they should have happened long ago and the budget has gone. But it's just bad project management that allows this to happen. I would hope there is some formal assessment by a separate instructor at the end of trip two that everything has been communicated (and thus two trips is a minimum), and there would be some practical basis to this figure, eg after two trips at least 95% pass the assessment. But I wonder. But it seems everything has not been communicated! Surely the training should be sufficiently comprehensive to explain all these aspects. Otherwise you start to get Urban Legends among the team, which is no way to go.
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Post by Deleted on Dec 13, 2010 20:34:46 GMT
Interesting point about speed approaching stations. I've noticed on DLR when the train is in ATO but the driving panel is open for the on-board assistant to operate the doors that the ATO always drives the train at just over the target speed when slowing - in PM I expect it would be bleeping in the drivers ears to slow down, but in ATO obviously it doesn't do that. I wonder therefore if you could drive more aggressively in PM against the bleeping / buzzers etc on the edge of over speeding without actually doing so? Has anyone experienced a JL train in ATO from the cab and if so, does the target speed still show up on the display the same as when in PM? I am just wondering if the JL ATO also drives just above the target speed when slowing down like DLR giving a faster more aggressive approach?
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Post by Deleted on Dec 13, 2010 22:38:45 GMT
"Has anyone experienced a JL train in ATO from the cab and if so, does the target speed still show up on the display the same as when in PM?"
Yes it does - the Train Operator's Display (TOD) shows the same speed information in ATO as it does in PM.
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Post by mildlyinteresting on Dec 21, 2010 4:02:04 GMT
Having said that when it works it does seem to be a very good system. Seeing three trains each a cars length apart on the Northbound approach to West Hampstead certainly got some interested / puzzled looks from passengers on the Met trains running passed. What were they doing so close? Possibly a bit of an exageration - but the system will bring a train right up behind the one in front (there is a safety buffer around each train) unless there is a rail gap, station, points or a tunnel vent in the way which the train shouldn't ideally be stopped over. Initially one of the the problems was on the approach to Stratford where trains were held over a rail gap as the train in front was held at the points waiting for a route into Stratford. This meant stalled trains (which could be moved using the 'Supply Gap Override Button') but by this point the Vehicle On Board Computers had reset, meaning that the system wouldn't recognise the train (or rather the train couldn't recognise TBTC commands), so you'd have to proceed for a distance in restricted mode which is about 7mph. That's what happened to me anyway!
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Post by Deleted on Dec 29, 2010 9:54:40 GMT
has there been any TBTC testing over the Christmas period?
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Post by t697 on Dec 29, 2010 19:35:54 GMT
The LU intranet says the JL is running TBTC for the first time on a weekday and they expect to leave it that way. AND that they expect to run full 51 train service in a few days - next week I guess when normal service intervals resume. There is mention that they can quickly revert to tripcock type legacy signalling at the moment. Anyway fingers crossed for them!
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Post by Tubeboy on Dec 29, 2010 19:58:28 GMT
Yes its been running in TBTC mode since Monday [Today was in passenger service] Some trains were running in ATO, made a bit of a difference when entering a PED station, as it was much faster then usual. I had two trains overshoot my platform earlier. Also a faulty train at West Ham, which wrecked the service. There were big gaps in the service prior to this though According to someone in service control, one driver refused to take a unit from NOG, which caused delays.
I did hear prior to today that if today was a success, the new system would be left on for good.
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Post by Deleted on Dec 29, 2010 20:56:43 GMT
I used the jubilee on the western end today, severe delays due to a "signal failiure in the canning town area". Then on the way back home, the train was held at Willesden Green at 15:45 HRS for about five or ten minutes because "the train ahead was experiencing technical difficulties" I was in the leading car, looked out towards kilburn and I could see the tailights of the proceeding train about two train lenthgs away from the one I was on. Surely a few problems still need to be ironed out before it's used permanently?
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Post by londonstuff on Dec 29, 2010 21:06:33 GMT
The LU intranet says the JL is running TBTC for the first time on a weekday and they expect to leave it that way. AND that they expect to run full 51 train service in a few days - next week I guess when normal service intervals resume. There is mention that they can quickly revert to tripcock type legacy signalling at the moment. Anyway fingers crossed for them! Loads of questions that I've just thought of about this: Just from Dollis Hill to Stratford or all the way from Stanmore? If that's the case has the third platform at Stanmore been commissioned yet? Won't stepping back need to take place at Stratford as well? When will ATO start rather than just ATP - it'll be much easier than when the Central went that way won't it?
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Post by Deleted on Dec 29, 2010 23:57:05 GMT
ATO is in use - around half the trains are now ATO commissioned and between a 1/3 and a 1/2 of all trains out today have been in ATO, mostly without any significant issues.
This is TBTC just between Stratford and Dollis, with tripcock operation north of here. I don't think the north end is ready until around March / Easter time, so no 3rd platform yet!
Today's service has been a bit intermittant, but just about OK for the loadings. The plan I believe is to leave the system in use, but as said before, roll-back options are available if the reliability takes a turn for the worse.
It would seem it has got to a stage where it is better to leave it in and solve the issues whilst running rather than keep changing back and forth between the two systems, which kind of makes sense if the service levels are just about bearable.
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Post by Deleted on Dec 30, 2010 1:04:23 GMT
I used it this evening and was very impressed – service seemed pretty regular and to the uninitiated, nothing out of the ordinary, which is as it should be; other than two announcements preceding every stop. To the initiated – faster than usual. Well done to all concerned. Let's all hope there are no major setbacks.
I've also just noticed that the TfL website departure boards are now showing the whole Jubilee Line correctly; earlier today there was nothing at all showing for the Jubilee, or indeed for the Met, Circle, H&C, District, Victoria or Bakerloo.
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Post by Deleted on Dec 30, 2010 9:45:32 GMT
Not so good this morning?
Advertising severe delays due to a signal failure at West Ham
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Post by Tubeboy on Dec 30, 2010 13:29:02 GMT
Indeedy, problems with the Axle counters. Trains were put it into RM [Restricted Manual] which means speed is limited to 10mph. Service was thus suspended East of NOG. Later in the day, we had a train failure at West Hampstead. Trains backed up behind it all the way to Kingsbury. The failed train then went to Stratford depot. To make matters worse, the first service train behind it had a handle pulled down at Westminster which compounded the delay. In general, this TBTC is working ok.
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Post by Deleted on Dec 30, 2010 13:35:38 GMT
Now up the wall (severe delays) for a signal failure at West Hampstead.
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Post by Deleted on Dec 30, 2010 14:19:09 GMT
i've just been to Bond Street from Canary Wharf and back
I'm pretty impressed (on the whole). Apart from a few hold-ups, the trains were running nice and fast, stopping accurately and following each other pretty closely at times.
The highlight was when my train was suddenly terminated (i.e. an announcement at the previous station) at London Bridge going eastbound. The train went over the crossover west of London Bridge fairly fast (almost certainly faster than 10mph, more like 25mph perhaps?) and then accelerated into the wrong platform before coming to a halt. The train behind reached the correct platform (i.e. eastbound) before many of the passengers had changed from the terminated train and walked to the eastbound platform.
Clearly, this system has a few things that need to be ironed out, but I'm very impressed with what it can do, and look forward to when it's reliability is increased.
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Post by Deleted on Dec 30, 2010 14:46:57 GMT
That train did not go into the wrong platform, that is how a crossover is used! You don't then pull forwards and shunt back if you can run into the WB platform terminating from EB or you'll be holding up the service even more as it requires changing ends whilst in the tunnel!
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Post by Deleted on Dec 30, 2010 19:11:37 GMT
Maybe, but it's a rare occurrence in traffic. A few years ago, during severe disruption in a previous signalling experiment, I was waiting to go west at Waterloo. The next train was 15 mins or so. A train was terminated on the eastbound, and the indicator changed to Stanmore. I got on. I was then told to get off as passengers couldn't be carried across the crossover. The train left empty.
Back to the present. I get the feeling the powers that be are trying all possible combinations to test the system. I had a very quick journey from Finchley Road to West Ham this afternoon in a train obviously using ATC (all decelerations quick, smooth and precise), and was then turfed out when the destination was switched from Stratford to West Ham. I checked the westbound – the first two trains were both Willesden Green in 1 and 2 mins!
The following Stratford was then also changed to "Terminates Here". After about 6 minutes the doors of the original train, still there, opened and it was announced as going to Stratford after all! Everyone back on.
The indicators at Stratford were completely out of kilter with departing trains. As were the booking hall next train indicators at Kilburn, showing the next three southbound trains as 16, 16 and 18 mins respectively whereas on the platform they were something like 4, 8, 11.
So, fun and games. But overall, a respectable service seems to have run, and the latent performance is stunning. Hopefully the software has good diagnostics.
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rincew1nd
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Post by rincew1nd on Dec 30, 2010 20:36:04 GMT
It's interesting that problems are now being described as 'Signal Failures' rather than previously 'faulty trains'.
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Post by Deleted on Dec 31, 2010 1:00:33 GMT
That's because they were failures of the signalling trackside today (axle counters at both West Ham end of Stratford depot and West Hampstead) , not on the trains, where as previous failures on other days were the trains or onboard signalling hence why the train itself gets reported as the failure. Teething problems with both I suppose, hence the choice of reasons for delays being announced.
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