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Post by madandy on Aug 7, 2012 9:28:58 GMT
Last night the Metropolitan Line was not running between Baker Street and way out into the sticks so I watched the chaos at Willesden Green as trains were being decanted onto the already packed Jubilee Line. A bit later walking back from the shops I spotted over the bridge a queue of Jubilee Line trains waiting to go into Willesden Green while one detrained to reverse.
While pausing to watch this I became aware of the fact that the Southbound service on both the Jubilee and the now restored Metropolitan Line Line service was absolutely jam packed with youngish looking people and a glance up towards Wembley revealed the stadium lit up. Yes, an event had ended there and it was clear-out time.
I the saw an almost empty Jubilee Line train rattling Southbound which had obviously reversed at Willesden Green. However, as I lingered there eventually another Willesden reverser came up and it soon became apparent that every third or fourth train was reversing there then leaving almost empty amongst the jam-packed trains from further up the line.
This is something that absolutely astonished me. For all the hype and verbage about preparing for the Olympic turning trains three stops short of where they are needed is crass inflexible management.
How on earth can such a scenario occur?
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Post by Deleted on Aug 7, 2012 9:54:04 GMT
Perhaps they were trying to restore capacity Southbound. With all trains leaving Wembley full, there would be no opportunity for local passengers to board southbound. I would also assume that with the passengers cleared south of Willesden Green, dwell time would be reduced as local customers would not need to be struggling to board trains.
I would also imagine that trying to load trains to the full at Wembley Southbound would have put a delay on the trains, therefore line capacity north of Wembley Park might have been an issue if trains continued to arrive northbound at Stanmore. And perhaps with other events going on in the Stratford area it might have been essential to retain decent headways on the east end of the line.
Dean
Just a couple of thoughts!
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Post by metman on Aug 7, 2012 11:55:09 GMT
Sound like good points to me. I may have thrown in a Neasden reverser too just before the Willesden Grn one!
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Post by DrOne on Aug 7, 2012 12:06:38 GMT
Given the fact that Wembley Pk has gets so busy on event days I don't think it has optimal arrangements for a reversing point (compared with North Greenwich, say). I've previously suggested in another thread that all the trains that turn short could provide the slow service to HOTH, allowing a greater tph through Wembley Pk when necessary.
Deansullivan's points sound very reasonable and underline the point that even when one section of the line is under particular strain, considerations still need to be made that will ensure the overall service runs effectively.
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Post by madandy on Aug 7, 2012 12:38:37 GMT
Perhaps they were trying to restore capacity Southbound. With all trains leaving Wembley full, there would be no opportunity for local passengers to board southbound...................... And perhaps with other events going on in the Stratford area it might have been essential to retain decent headways on the east end of the line. Dean Just a couple of thoughts! The Metropolitan Line service had been restored and it's trains were as packed as the Jubilee trains. The headways South of Willesden Green were unaffected. The most crowded trains were those immediately behind the Willesden reversers (presumably due to a large gap in service up to there) and whilst those of us at Willesden Green may, very rarely take heed of the train starting out from there those further down the line are not enightened as to the possibility and cram into the first train that comes in and may wait for the second one but seeing that one is crammed too will force they way in believing they are all like that. I fail to see how capacity at the East end of the line is affected as all trains would be going there at the same intervals anyway. Maybe I am missing something here but turning it on it's head if there is a logical reason for this then by the same token when there are football crowds at weekends when there are no Willlesden Green reversers normally they don't introduce them..... so should they? And this begs the question as to whether it would then be logical to run Willesden reversers PRIOR to events for the same reasons outlined.
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Post by norbitonflyer on Aug 7, 2012 13:34:21 GMT
I fail to see how capacity at the East end of the line is affected as all trains would be going there at the same intervals anyway. In the immortal words of Eccles of the Goons - "Everyone's gotta be somewhere" If there are fewer trains west /north of Willesden (because some ater being turned there, they must be somewhere else - hence there are more at the central part and east end of the line.
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Post by Deleted on Aug 7, 2012 14:08:47 GMT
Its entirely possible that headways are affected by events involving large numbers of customers boarding at one particular location. In my old days I used to assist with planning for the Carnival, particularly in respect of how it affected us at Notting Hill Gate.
I also had a few other large crowd moves to organise such as Pride (in I think about 1996) which involved Mile End Station and a Blur concert there a few weeks previously.
The problem particularly with Pride & Blur was the need to shift large numbers of customers just before the system shut down. That meant we had to fill every train to its maximum level in order to stand half a chance of clearing the crowds. Leaving customers outside after the last trains had departed was not an option.
So we analysed everything, including things like the ability of the stairwells to handle volumes of passengers, at what speed and so on. This included the theoretical & practical maximums of a 92 stock train. Including how long it would take a train to fill. I have no doubt LUL have done this process for every station affected by the Olympic games. And I suspect in a lot more detail.
In the case of Carnival, loading and unloading dramatically increases dwell times as would be expected. In addition Train Operators had to approach and depart the platforms at busy times at Caution speed so as to avoid dragging any passengers into the tunnel. All this significantly held up the service.
So returning to Mile End... Of course that meant we had to hold up the service while we filled the trains. This caused significant blocking back which we anticipated. Not a problem that late at night as in both cases we did not have any other immediate concerns. Other than holding up last trains on other connecting lines.
So in the case of the Jubilee I suspect they have to concentrate on keeping the headways regular at the Stratford end in order to shift customers before close of traffic.
I would also suspect that LUL have factored in extra trains to deal with the anticipated crowds. So perhaps theres a degree of flexibility in how these trains are deployed. The dangers are perhaps not seeing the whole picture. Something I expect the Jubilee Control Centre would have been able to.
Of course it was just a guess!
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Post by madandy on Aug 7, 2012 23:18:26 GMT
Yeah Dean, but whether that 25% of trains turn at Willesden Green or Wembley Park does not affect the situation in Stratford since East of Willesden Green the frequency will be the same.
That is what I don't understand.
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mrfs42
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Post by mrfs42 on Aug 8, 2012 1:46:38 GMT
Yeah Dean, but whether that 25% of trains turn at Willesden Green or Wembley Park does not affect the situation in Stratford since East of Willesden Green the frequency will be the same. That is what I don't understand. It's worth pointing out that Willesden Green reversers were formerly much more popular because trains couldn't fit into Stanmore - with the third platform that had eased somewhat; however I note in the new TT that there is a marked increase in WG reversers, presumably to keep a return flow of trains through the central area - likewise quite a few more North Greenwich reversers. The difference between a Willesden Green and a Wembley Park reverser is obviously that WG reversers head back east about 20 minutes earlier than WmPk - this may or may not have a bearing on drivers hours (it has been a while since I've seen a duty book for the Jubilee). Possibly not as the TT falls into a regular booked pattern; although I note a lot of stand time notes in some unusual places in this TT : the 1718¾ off Stanmore is booked to stand at Canons Park, Queensbury, Kingsbury, Wembley Park, Neasden, Dollis Hill and Willesden Green (the pattern does change if the train is creeping up on a reverser or not, although I suspect know that isn't the entire story). After having a quick ponder on my notes, my best guess for the current situation is: Between Willesden Green and North Greenwich the line is (I think) timetabled at near maximum capacity - beyond these stations the service is deliberately 'thinned' to allow platform occupation time at the terminals (what was referred to as 'Terminal Allowance' in the good old days of planning for the New Works programme) - there are now more trains out in service. Look at the following extract from a recent Jubilee WTT - the salient bits are the platform numbers at Stanmore: Look at the time elapsed between the first departure from platform 3 and then the second arrival. 0908¼ - 0910¼. In that passage of time across the galley there has been a reverse at both Willesden Green and Wembley Park - with the enhanced service trains physically cannot fit. The reverse is true albeit to a lesser degree between North Greenwich and Stratford.
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Post by madandy on Aug 9, 2012 1:34:31 GMT
Interesting as the above point is it does not quite relate to what I was witnessing. That timetable reveals four out of six trains going to Stanmore with the other two split between Willesden Green and Wembley Park.
What I was observing was one in four (or five) reversing at Willesden Green an none at Wembley Park which would have meant more pressure on Stanmore than in that timetabled example.
The mathematics of this state that for every dozen trains in the timetable the Stanmore:Wembley:Willesden ratio is 8:2:2. The other day I was witnessing (at every fourth train turning short) 9:0:3.
There really seems to be no reversing capacity problem there if that changed to 9:3:0 to place the trains where they are needed.
However, during Wembley events running all trains up to Wembley certainly need not cause a shortage of turning piints if Willesden Green and West Hampstead are excluded.
Just run some up to Canons Park and reverse them into the sidings.
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Post by Deleted on Aug 9, 2012 8:12:28 GMT
Yeah Dean, but whether that 25% of trains turn at Willesden Green or Wembley Park does not affect the situation in Stratford since East of Willesden Green the frequency will be the same. That is what I don't understand. The frequency east of Willesden won't be the same. Travelling beyond Willesden to Wembley takes longer so the trains will not be in position for their eastbound journeys. The only way that there are enough trains to provide a 30tph service through the centre of town (the weekday timetable this week has a "3rd peak") is to reverse some at Willesden Green. Reversing the service only at Wembley and Stanmore would cost more trains that aren't available. Also if this is done ad-hoc to deal with, say, a Met line failure it will put a number of crews in the wrong place and create a delay elsewhere. Having said that there is perhaps an argument for a special timetable for some event days that pushes trains through to Wembley in place of Stratford but during the Olympics with so many events and passenger flows across the whole line doing this would just be robbing one flow to support another. Although there were c61,000 at Wembley there were over 100,000 due to leave events at the other end of the line plus about 15,000 at Horse Guards. Finally since you weren't there you don't know whether the Jubilee and Met trains that were at Wembley, although busy, were clearing the crowds adequately and thus the Willesden trains were not needed as extra capacity. That's the problem with taking an isolated view rather than a whole line view as Dean mentions.
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Post by madandy on Aug 10, 2012 15:47:00 GMT
Finally since you weren't there you don't know whether the Jubilee and Met trains that were at Wembley, although busy, were clearing the crowds adequately and thus the Willesden trains were not needed as extra capacity. That's the problem with taking an isolated view rather than a whole line view as Dean mentions. That's rather like saying that if a river passing you bursts it's bank in a dry spell you cannot say that there was sustained torrential rainfall upstream if you were not there. When the trains are jammed solid door to door with passengers from front to rear on both lines it is pretty obvious that there were more who would not have got on. One can take a whole line view but the next day I make a point of looking again when the crowds were going TO Wembley and every train was going through to there. Regarding the point about the 20 minutes extra to turn a train at Wembley that seems excessive but if that is a problem then a solution would be to turn half the Willesden reversers there and the other half at West Hampstead thus reducing the average time loss per reverser dramatically. Taking a far wider look at the problem I can't help but think that given the Jubilee Line vulnerability to multiple events at the same time there might be a case for loaning trains from other lines. I find the policy of holding onto those four A-stock ghost trains in case of emergency on the Met very bizarre..... what if the A-stock had gone ages ago, but given that the underground is known as a "network" it should be more flexible on that score and if compatibility problems occur that is poor strategy.
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Post by Harsig on Aug 10, 2012 16:50:36 GMT
During the return traffic period, the limiting factor is the number of trains that can get through Wembley. In my experience any train calling at Wembley during a return traffic period is subject to an extended dwell time at that station, which actually results in trains queuing up to get into the platform(s) there. This leaves no scope for increasing the number of trains serving the station.
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Post by ruislip on Aug 11, 2012 2:50:49 GMT
Were there any WG reversers when the Bakerloo had the Stanmore branch?
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Post by causton on Aug 11, 2012 4:03:16 GMT
How about after Wembley events, Wembley Park reversers for Wembley traffic and other passengers use services from Stanmore, which pass through Wembley Park southbound without stopping? (double back via Neasden cross-platform if needed!)
(sort of idea you get when you haven't quite got to bed yet...)
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Post by madandy on Aug 11, 2012 8:42:40 GMT
.........Although there were c61,000 at Wembley there were over 100,000 due to leave events at the other end of the line plus about 15,000 at Horse Guards............ I totally missed the significance of this point........ in fact is is irrelevant because Stratford has the Jubilee Line, the Central Line, London Overground, two branches of the Docklands Light Railway, the trains to Kings Cross, the Eastern Region and additional support the District and Hammersmith and City Lines at West Ham and three direct bus routes to the centre within walking distance. Horse Guards has ready access to numerous tubes and Central London bus routes. Wembley on the other hand only has the Jubilee, Metropolitan and Chiltern Lines with a supporting cast of the Bakerloo and London Overground and one bus back to the centre. Given all that and the crowd figures I know which one I'd rather avoid trying to get away from at the end of an event.
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Post by superteacher on Aug 11, 2012 9:22:55 GMT
Were there any WG reversers when the Bakerloo had the Stanmore branch? I don't think there were any regular WG reversers. Remember that the Bakerloo had a half service to each branch north of Baker Street, so in effect this would be a train every 4 minutes in the peaks. Reversing trains at WG would have meant an 8 minute gap north of there, so not ideal. I'm pretty sure that there were only Wembley Park reversers scheduled, with WG and West Hampstead used to recover late running or during service suspensions.
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Post by mrfs42 on Aug 11, 2012 10:45:14 GMT
There were some - not many. The reversing siding was commissioned on 15.10.38, presumably as part of the advance stageworks for transference of the branch between the Met and the Bakerloo.
Unfortunately, my Bakerloo WTTs are still buried in a box and it's right at the back of the other boxes.
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Post by Deleted on Aug 12, 2012 19:47:40 GMT
I have had a look through my WTT notes for the Bakerloo from its opening to Stanmore in late-1939 through to when the Jubilee took over on 1/5/79. I can find no reference to any scheduled Bakerloo reversers at Willesden Green, although the Met certainly did prior to the opening of the Bakerloo, but up to what date I don't know.
Having then checked my notes for the Jubilee Line from 1/5/79, it says "It also brings into regular use the reversing sidings at Willesden Green and West Hampstead on Mondays to Fridays ....".
That said, as Bakerloo Line Controller in the 1970s, I sometimes used both sidings for "service requirements" (late running, and to put a dud train that needed to be got out of the way quickly).
If I remember correctly, Willesden Green cabin then wasn't open all the time in the 1970s, whereas Finchley Road (which controlled West Hampstead) was, so this was the favourite to be used, rather than scrabble round to see if there was a signalman available at Willesden Green.
If I have missed any booked / timetabled Willesden Green reversers 1939-1979, I would be interested to know.
However, West Hampstead siding was used by Bakerloo trains on Christmas Day from 14.00 from 1962 and all-day from 1973 to 1975, the intermediate stations (that were open!) being served by the Met. For this there had to be a signalman at Willesden Green to cross the northbound Mets over between there and Dollis Hill !!
When the Bakerloo opened to Stanmore in November 1939, there remained a 15-minute rush hours only all stations Met service between Wembley Park and Finchley Road, running via the Bakerloo. These workings were officially discontinued from WTT 78 of 31/3/41.
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Post by mrfs42 on Aug 12, 2012 20:23:44 GMT
If I have missed any booked / timetabled Willesden Green reversers 1939-1979, I would be interested to know. I'm 99% sure that I've seen them in a Bakerloo TT (not a Jubilee) and possibly very possibly in a landscape Met WTT. It'd take a lot searching, but when we get round to that layer of boxes I *will* have a look - I'm pretty sure that I've got a complete Bakerloo run from the early 60s and before that in the Mets. ....in fact.... I've a few unaccessioned TTs that have arrived in 'Timetable Towers' after the move and there might be a couple in the 'bedside reading' pile. Watch this space.
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Post by Deleted on Aug 12, 2012 20:59:11 GMT
Will do
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mrfs42
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Post by mrfs42 on Aug 13, 2012 11:11:50 GMT
Found some Wembley Park Bakerloo teversers in a 1953 Met. WTT and 1963 Met. WTT.
Willesden Green isn't on the galley, so it'd be a column note which I do vaguely remember reading but when and where I've no idea amongst the couple of million or so train times. Will continue digging.
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Post by Deleted on Aug 13, 2012 11:40:13 GMT
You might be digging to Australia
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Post by Deleted on Aug 13, 2012 12:07:35 GMT
.........Although there were c61,000 at Wembley there were over 100,000 due to leave events at the other end of the line plus about 15,000 at Horse Guards............ I totally missed the significance of this point........ in fact is is irrelevant because Stratford has the Jubilee Line, the Central Line, London Overground, two branches of the Docklands Light Railway, the trains to Kings Cross, the Eastern Region and additional support the District and Hammersmith and City Lines at West Ham and three direct bus routes to the centre within walking distance. Horse Guards has ready access to numerous tubes and Central London bus routes. Wembley on the other hand only has the Jubilee, Metropolitan and Chiltern Lines with a supporting cast of the Bakerloo and London Overground and one bus back to the centre. Given all that and the crowd figures I know which one I'd rather avoid trying to get away from at the end of an event. Speaking from experience rather than observation I can tell you that it absolutely is not irrelevant. As much as the publicity encouraged the use of other routes to the Olympic Park the Jubilee and the Central took the lion's share. If you think that any signiifcant numbers would choose to get a bus to central London from Stratford .... well I'm sure they didn't. I know from colleagues that the return traffic from Wembley was handled at most in around 10 or so minutes more than what would be expected on a 'normal' day so your original premise - that the Willesden trains should have been extended to Wembley - is wrong given the adverse impact it would have elsewhere on the line. Had the Met been suspended it may well have been a different decision was needed.
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