Deleted
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Post by Deleted on Apr 6, 2011 5:50:54 GMT
Not only that but as Tom said before, the signal overlaps are calculated based on a speed reached by the train from a station. Therefore you have to restrict the acceleration to the same as not to breach the overlaps on signals.
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Deleted
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Post by Deleted on Apr 6, 2011 7:05:18 GMT
Thanks everyone. I understand the signal overlap thing I think. Obviously on NR overlaps are huge. The arriving early and waiting at stations I don't buy simply because you can drive normally when on time (which is what the Jubilee line trains do) and only use the extra power of the train to make up time when running late.
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Post by tubeprune on Apr 6, 2011 13:20:17 GMT
Thanks everyone. I understand the signal overlap thing I think. Obviously on NR overlaps are huge. The standard overlap on NR was set in 1978 at 600ft (183m) and was arrived at simply on the basis that the maximum distance drivers were found to SPAD was rarely more than 300ft, so double it to be safe. In places where the line speed is less than 60mph the overlap could be reduced. Obviously there were variations at stations and turnouts. |
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slugabed
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Post by slugabed on Apr 6, 2011 13:30:55 GMT
Thanks everyone. I understand the signal overlap thing I think. Obviously on NR overlaps are huge. The standard overlap on NR was set in 1978 at 600ft (183m) and was arrived at simply on the basis that the maximum distance drivers were found to SPAD was rarely more than 300ft, so double it to be safe. In places where the line speed is less than 60mph the overlap could be reduced. Obviously there were variations at stations and turnouts. This is very interesting (and reassuring) as we can infer that for the vast majority of SPADS,the driver saw the signal but (for whatever reason) stopped "long" of the signal.300' is,after all,around a train's-length.This is a testament to the drivers,and the designers of the signalling system. Did MRFS not say,a little while ago,that this was overlaps "doing their job"? What proportion of SPADS (do you suppose) took the form of the driver passing the signal at line-speed and only being brought to a halt by either the next signal or something more solid? A pretty small one,I suspect,but it is these that we REALLY have to worry about. |
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Deleted
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Post by Deleted on Apr 6, 2011 19:55:22 GMT
"the driver saw the signal but (for whatever reason) stopped "long" of the signal."
From my days on LTS most SPADs were caused by poor rail conditions or low sunshine. Though a few were caused by drivers acknowledging the red on the way into a station stop and then forgetting when they got the whistle from an over enthusiastic platform attendant.
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Colin
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Post by Colin on Apr 7, 2011 8:19:29 GMT
Folks, can we stick to the subject of S stocks please - if you want to discuss SPADs in detail, please start a new thread in the signalling area....
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Deleted
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Post by Deleted on Apr 7, 2011 17:19:24 GMT
Ok, so how many have been delivered and are in service? If there are 24 built, how many of those have gone through or are in testing? I presume we'll soon see a lot more of them on the line... Admin Note:We have a specific post which lists all S stock deliveries - it can be found by CLICKING HERE. |
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prjb
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Post by prjb on Apr 7, 2011 17:55:58 GMT
We currently have 7 passenger trains and two pre-series trains (one of which is in S7 guise).
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cso
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Post by cso on Apr 7, 2011 17:58:40 GMT
What percentage of TOps can drive S8s?
(If you can say that, of course!)
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Post by Alight on Apr 13, 2011 14:13:52 GMT
I wonder what caused this error on the CIS yesterday at Harrow on the Hill? As the uploader mentions in the description, Circle line trains don't even go to East Ham!
(clip also posted in the video/image thread)
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Post by Dstock7080 on Apr 13, 2011 17:48:03 GMT
I wonder what caused this error on the CIS yesterday at Harrow on the Hill? As the uploader mentions in the description, Circle line trains don't even go to East Ham! Some Circle trains start/finish from Barking sidings. |
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Post by t697 on Apr 13, 2011 19:08:38 GMT
I wonder what caused this error on the CIS yesterday at Harrow on the Hill? As the uploader mentions in the description, Circle line trains don't even go to East Ham! (clip also posted in the video/image thread) Just a mistake setting the CIS by the T/Op methinks. At the end he makes a PA announcement confirming the train is going to Uxbridge. There's another video which seems to be the same train, moments later leaving Harrow and going to Eastcote. CIS works properly for the rest of that. I know that one claims to be car 20117 but it must be a typing error for 21017. |
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Post by dangeruxb on Apr 20, 2011 12:41:08 GMT
To keep tabs on the S Stock over the last month, the following were sighted:-
21005 Train 441 16/03
21017 Train 451 17/03
21009 Train 441 17/03
21013 Train 441 22/03
21009 Train 465 22/03
21013 Train 451 29/03
21003 Train 465 30/03
21009 Train 451 31/03
21003 Train 441 31/03
21005 Train 451 04/04
21007 Train 465 05/04 - Note was showing as all Stations to UXB for the 19:16 dep from BST. According to the details I have this should have been to WTF
21005 Train 441 07/04
21009 Train 465 08/04
21009 Train 465 13/04
21003 Train 441 15/04
21013 Train 462 15/04
21009 Train 441 19/04
21013 Train 462 19/04 (Running OOS north from Northwick Pk @ 09:50)
21005 Train 451 19/04
21005 Train 451 20/04 (UXB End carriage doors not Open on 07:53 departure)
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Post by dangeruxb on Apr 20, 2011 12:42:10 GMT
Has anybody seen 21011 in service yet btw?
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Deleted
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Post by Deleted on Apr 21, 2011 22:09:16 GMT
According to the deliveries topic - there was no new deliveries since the end of January. What's going on with S8s?  And is there any estimate when S8 trains will be extended to Aldgate? As a regular Met commuter (since February) I certainly haven't seen a single one yet  |
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cso
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Post by cso on Apr 21, 2011 22:16:24 GMT
I thought there was a delivery recently, as it got held up at Princes Risborough / Thame branch. That could have been PP1/2 coming back as an S7 though.
I think they're cleared for Passenger Service, but still not seen one going there myself yet.
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Deleted
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Post by Deleted on Apr 21, 2011 22:21:18 GMT
That was indeed the S7 pre-prod, they took a car out of an S8 one.
S stock have been running to Aldgate for a couple of weeks now!
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Deleted
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Post by Deleted on Apr 22, 2011 15:24:01 GMT
S stock have been running to Aldgate for a couple of weeks now! Is that outside of peak hours? |
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Deleted
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Post by Deleted on Apr 22, 2011 15:49:05 GMT
Yes, yesterday one of the Aldgate diagrams was being run by an S stock, as were two Baker St. diagrams.
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Post by astock5000 on Apr 27, 2011 0:18:22 GMT
According to the deliveries topic - there was no new deliveries since the end of January. What's going on with S8s? There was a gap, but as well as pre-production train 21001 coming back as a S7, unit 21011 was delivered earlier this month. It's now been at Neasden for over two weeks, which is longer than it took for most of the others to enter service, so is it in service yet? |
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Deleted
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Post by Deleted on Apr 27, 2011 9:23:38 GMT
As of today, not yet.
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cso
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Post by cso on May 3, 2011 10:11:52 GMT
Spotted, what I assume to be the test train given it had covered windows, in the Uxbridge Sidings when I arrived here about 10 minutes ago.
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Deleted
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Post by Deleted on May 3, 2011 19:24:43 GMT
Spotted, what I assume to be the test train given it had covered windows, in the Uxbridge Sidings when I arrived here about 10 minutes ago. 21099/100 ^ |
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Post by metroland on May 11, 2011 12:37:18 GMT
Another delivery on its way right now. Can't confirm id of S stock as most postings on gen groups are more interested in the Class 20's (though they're always 20.301/302/304/305 these days).
Will reach Neasden 1am-ish 12May
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Deleted
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Post by Deleted on May 11, 2011 12:40:32 GMT
Another delivery on its way right now. Can't confirm id of S stock as most postings on gen groups are more interested in the Class 20's (though they're always 20.301/302/304/305 these days). Will reach Neasden 1am-ish 12May How about they deliver them to a siding at Northwood instead! ;D Xerces Fobe |
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Post by causton on May 11, 2011 22:37:07 GMT
To say goodbye to a departing A-stock? How cruel! ;D
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metman
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Post by metman on May 12, 2011 12:35:11 GMT
No to join it ;D So did 5066 and 5167 make way for it or is another pair going!  |
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Deleted
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Post by Deleted on May 12, 2011 15:40:05 GMT
It was indeed 5066 + 5167.
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Deleted
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Post by Deleted on May 13, 2011 9:33:55 GMT
This is what I saw this morning
T441 13/14
T451 05/06
T462 07/08
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Deleted
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Post by Deleted on May 13, 2011 12:04:32 GMT
Apparently 011/012 still hasn't entered service?
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