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Post by stanmorek on Feb 24, 2009 0:27:27 GMT
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Post by tubeprune on Feb 24, 2009 13:42:03 GMT
Yes, Legion is the DfT preferred modelling software.
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Post by stanmorek on Feb 24, 2009 23:36:34 GMT
So what types of these analyses on platform occupation and dwell times would have been used to develop the new signalling system and rolling stock on the SSR Upgrade?
Has opening of trains doors before coming to a dead stop at platforms to maximise door open times been used on LU in the past?
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Post by tubeprune on Feb 25, 2009 10:52:00 GMT
So what types of these analyses on platform occupation and dwell times would have been used to develop the new signalling system and rolling stock on the SSR Upgrade? You're joking aren't you? Absolutely none. Well, none directly. The whole upgrade plan was developed on the JTC model, which was an Excel spreadsheet designed in-house by LU planners. Some bits of it were quite good but some were a bit odd. It's a long story, so I can't go into it all here. Some of the original ideas have been watered down. They were just too theoretical. No fear! Can you imagine what the press would say if someone publicly suggested opening the doors before the train stopped? Mind you, some of us used to operate the door open buttons so that the doors began to open as the train came to a stand. You could save a couple of seconds at every station that way. After 30 stations, you've saved a minute. |
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Post by happybunny on Feb 25, 2009 10:59:09 GMT
Mind you, some of us used to operate the door open buttons so that the doors began to open as the train came to a stand. You could save a couple of seconds at every station that way. After 30 stations, you've saved a minute. Still is possible and happens quite often |
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Post by stanmorek on Feb 25, 2009 11:41:33 GMT
So what types of these analyses on platform occupation and dwell times would have been used to develop the new signalling system and rolling stock on the SSR Upgrade? You're joking aren't you? Absolutely none. Well, none directly. The whole upgrade plan was developed on the JTC model, which was an Excel spreadsheet designed in-house by LU planners. Some bits of it were quite good but some were a bit odd. It's a long story, so I can't go into it all here. Some of the original ideas have been watered down. They were just too theoretical. No fear! Can you imagine what the press would say if someone publicly suggested opening the doors before the train stopped? Mind you, some of us used to operate the door open buttons so that the doors began to open as the train came to a stand. You could save a couple of seconds at every station that way. After 30 stations, you've saved a minute. These ideas were all, including early door opening, mentioned in a presentation by Network Rail's programme director for Thameslink. It left me with far too high expectations for our own Underground Railway...  |
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Post by stanmorek on Feb 25, 2009 11:49:02 GMT
Mind you, some of us used to operate the door open buttons so that the doors began to open as the train came to a stand. You could save a couple of seconds at every station that way. After 30 stations, you've saved a minute. Still is possible and happens quite often Apparently this is carried out on certain parts of a continental metro system. Possibly Paris. |
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Post by 21146 on Feb 25, 2009 12:04:51 GMT
Still is possible and happens quite often Apparently this is carried out on certain parts of a continental metro system. Possibly Paris. This happens in modern lifts so there's no reason why LU trains, esp under ATO, couldn't follow suit. It beggars belief that LU bang-on about 'every second counts' re dwell-time yet more-and-more new stock have this 3, 4, 5 seconds or more delay, first seen on the Central Line, between the train stopping and the doors opening. |
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Post by silverjon on Feb 25, 2009 13:12:47 GMT
On non-ATO lines frequently TOs open the doors at least a second before the train is at a full stop. I consider it a challenge to leave the train and touch the platform before the train's stopped... haven't managed it yet!
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Post by edwin on Feb 25, 2009 18:27:54 GMT
Still is possible and happens quite often Apparently this is carried out on certain parts of a continental metro system. Possibly Paris. Moscow too. And Paris and Moscow happen to have some of the highest frequencies in the world. What a coincidence. |
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Post by Deleted on Feb 25, 2009 21:37:12 GMT
On non-ATO lines frequently TOs open the doors at least a second before the train is at a full stop. I consider it a challenge to leave the train and touch the platform before the train's stopped... haven't managed it yet! Go to Paris - no problem doing it there! Great fun, makes up just a bit for not being able to jump off moving Routemasters |
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