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Can't the tube just go one day without some major fsckup?
So my wife has got stuck because of the victoria line being down. Just
how many "signal" failures per day are there? Would it not be possible to design something which doesn't fail quite so damn often and also design procedures so reversing trains doesn't take forever so at least the rest of the line can continue running some semblance of a service? B2003 |
Can't the tube just go one day without some major fsckup?
wrote in message ... So my wife has got stuck because of the victoria line being down. Just how many "signal" failures per day are there? Would it not be possible to design something which doesn't fail quite so damn often and also design procedures so reversing trains doesn't take forever so at least the rest of the line can continue running some semblance of a service? B2003 I have often wondered why signalling systems are so prone to falling over all the time. Mind you they are installing a new system on the Victoria line so was it really a failure or may be due to the installation work. The DLR is the one that gets me. It was built in the 80's and plagued with problems since day one. Kevin |
Can't the tube just go one day without some major fsckup?
On Feb 17, 8:23*pm, Paul Corfield wrote:
On Tue, 17 Feb 2009 02:06:08 -0800 (PST), wrote: So my wife has got stuck because of the victoria line being down. Just how many "signal" failures per day are there? Would it not be possible to design something which doesn't fail quite so damn often and also design procedures so reversing trains doesn't take forever so at least the rest of the line can continue running some semblance of a service? Not many at all on the Victoria Line in my experience over recent months. Considering work is still continuing I am surprised it's been as good as it has. *New conductor rail is now appearing on the north end of the line. This morning I was caught immediately behind the first train failure - the report was that a set of doors had been knocked off their track by a passenger. *I'm guessing that's because they barged their way into the train at the last second at Seven Sisters and when the train was entering Finsbury Park (downward slope and bend) that the door moved sufficiently for the brakes to apply. The train ended up half in, half out of F Park s/b platform. We eventually made it in but then got stuck while the failed train reversed at Highbury. *Needless to say that as we were the first train through for about 20 minutes the platforms were a bit busy! I see that there was then a subsequent signal failure at Victoria - don't know the cause yet. *That resulted in multiple partial line suspensions and then a full line suspension at the height of the peak. I would agree that signal failures are not acceptable but they can happen for all sorts of reasons. To effect quick turnarounds you need to roster in "stepping back" which is used at Brixton. However you can't just magic drivers out of nowhere to make it happen at Warren St or Highbury when there is a major disruption. *I know you'll say that's a typical useless LUL response but it's an honest one. When I tried to get on at Victoria this morning the information was that it was suspended between Brixton and Warren Street. I was surprised that they could turn round at Warren Street (if they really did). I suppose there is one crossover. |
Can't the tube just go one day without some major fsckup?
On 18 Feb, 00:53, MIG wrote: On Feb 17, 8:23*pm, Paul Corfield wrote: On Tue, 17 Feb 2009 02:06:08 -0800 (PST), wrote: So my wife has got stuck because of the victoria line being down. Just how many "signal" failures per day are there? Would it not be possible to design something which doesn't fail quite so damn often and also design procedures so reversing trains doesn't take forever so at least the rest of the line can continue running some semblance of a service? Not many at all on the Victoria Line in my experience over recent months. Considering work is still continuing I am surprised it's been as good as it has. *New conductor rail is now appearing on the north end of the line. This morning I was caught immediately behind the first train failure - the report was that a set of doors had been knocked off their track by a passenger. *I'm guessing that's because they barged their way into the train at the last second at Seven Sisters and when the train was entering Finsbury Park (downward slope and bend) that the door moved sufficiently for the brakes to apply. The train ended up half in, half out of F Park s/b platform. We eventually made it in but then got stuck while the failed train reversed at Highbury. *Needless to say that as we were the first train through for about 20 minutes the platforms were a bit busy! I see that there was then a subsequent signal failure at Victoria - don't know the cause yet. *That resulted in multiple partial line suspensions and then a full line suspension at the height of the peak. I would agree that signal failures are not acceptable but they can happen for all sorts of reasons. To effect quick turnarounds you need to roster in "stepping back" which is used at Brixton. However you can't just magic drivers out of nowhere to make it happen at Warren St or Highbury when there is a major disruption. *I know you'll say that's a typical useless LUL response but it's an honest one. When I tried to get on at Victoria this morning the information was that it was suspended between Brixton and Warren Street. *I was surprised that they could turn round at Warren Street (if they really did). *I suppose there is one crossover. A little more info on a rather calamitous morning for the Vic line yesterday: http://news.bbc.co.uk/1/hi/england/london/7894793.stm |
Can't the tube just go one day without some major fsckup?
On Tue, Feb 17, 2009 at 07:17:25PM -0000, Zen83237 wrote:
I have often wondered why signalling systems are so prone to falling over all the time. Because they're designed by paranoids to be hypochondriac and always call for a doctor when they've got a bit of a sniffle. -- David Cantrell | Official London Perl Mongers Bad Influence You may now start misinterpreting what I just wrote, and attacking that misinterpretation. |
Can't the tube just go one day without some major fsckup?
On Feb 17, 8:23*pm, Paul Corfield wrote:
I would agree that signal failures are not acceptable but they can happen for all sorts of reasons. To effect quick turnarounds you need to roster in "stepping back" which is used at Brixton. However you can't just magic drivers out of nowhere to make it happen at Warren St or Why would you have to magic up a driver? The train already has one and since he can't get to where he was going anyway why can't he just drive it back in the other direction? Highbury when there is a major disruption. *I know you'll say that's a typical useless LUL response but it's an honest one. All it shows is that LUL have little in the way of fall back procedures in place when things go pear shaped. A broken door or dodgy signal should not end up with 5 trains worth of people stuck in a tunnel for an hour. Broken signal? Fine , drive through it on caution and let everyone detrain. Whats the problem? Broken door? Reverse train back into platform , empty pax and take it away again. Sorted. Why do these simple procedures take LUL hours and hours to sort out? The odd occasion one can accept , but every single time theres some failure on a line this sort of thing occurs. I suspect it will take someone dying in a stuck train and the relatives suing LUL for a small fortune before someone pulls the corporate finger out however. B2003 |
Can't the tube just go one day without some major fsckup?
On Feb 18, 1:50*pm, wrote:
On Feb 17, 8:23*pm, Paul Corfield wrote: I would agree that signal failures are not acceptable but they can happen for all sorts of reasons. To effect quick turnarounds you need to roster in "stepping back" which is used at Brixton. However you can't just magic drivers out of nowhere to make it happen at Warren St or Why would you have to magic up a driver? The train already has one and since he can't get to where he was going anyway why can't he just drive it back in the other direction? The driver can just walk to the other end and drive it back, but for the normal service, there will be a driver already in position at the rear who take take the train straight back out. It takes a driver longer to walk from one end of the train to the other than the time that the train would have to turn around at Warren Street whilst still maintaining a reasonable frequency. At Warren Street, you would be lucky to manage a train every 5 minutes without stepping back, especially as the platform will be crowded. Highbury when there is a major disruption. *I know you'll say that's a typical useless LUL response but it's an honest one. All it shows is that LUL have little in the way of fall back procedures in place when things go pear shaped. A broken door or dodgy signal should not end up with 5 trains worth of people stuck in a tunnel for an hour. Broken signal? Fine , drive through it on caution and let everyone detrain. Whats the problem? Broken door? Reverse train back into platform , empty pax and take it away again. Sorted. Why do these simple procedures take LUL hours and hours to sort out? The odd occasion one can accept , but every single time theres some failure on a line this sort of thing occurs. *I suspect it will take someone dying in a stuck train and the relatives suing LUL for a small fortune before someone pulls the corporate finger out however. There seem to be plenty of fall back plans, the problem is that the system has enough trouble coping with a 'normal' day due to the number of passengers. For example, "Broken signal? Fine , drive through it on caution and let everyone detrain." is a good plan, except that to drive through a signal at caution may take three times (for example) as long as a normal and so the line gets blocked up with a queue of trains and what do you do with all the people that you've decided to detrain? Reversing a train back into a platform assumes that the next train isn't already coming into the station. All these procedures take time to set up for the very good reason as they often involve doing something out of the ordinary, there have been accidents after 'stop and proceed' at a failed signal with trains running into the back of one another. |
Can't the tube just go one day without some major fsckup?
On 18 Feb, 13:50, wrote: On Feb 17, 8:23*pm, Paul Corfield wrote: I would agree that signal failures are not acceptable but they can happen for all sorts of reasons. To effect quick turnarounds you need to roster in "stepping back" which is used at Brixton. However you can't just magic drivers out of nowhere to make it happen at Warren St or Why would you have to magic up a driver? The train already has one and since he can't get to where he was going anyway why can't he just drive it back in the other direction? Highbury when there is a major disruption. *I know you'll say that's a typical useless LUL response but it's an honest one. All it shows is that LUL have little in the way of fall back procedures in place when things go pear shaped. A broken door or dodgy signal should not end up with 5 trains worth of people stuck in a tunnel for an hour. Broken signal? Fine , drive through it on caution and let everyone detrain. Whats the problem? Broken door? Reverse train back into platform , empty pax and take it away again. Sorted. Why do these simple procedures take LUL hours and hours to sort out? The odd occasion one can accept , but every single time theres some failure on a line this sort of thing occurs. *I suspect it will take someone dying in a stuck train and the relatives suing LUL for a small fortune before someone pulls the corporate finger out however. The wider disruption on the Victoria line on Tuesday morning *was* caused by a signal failure - see... http://news.bbc.co.uk/1/hi/england/london/7894793.stm ....specifically this bit... "The cause of the delay was signalling problems [...]". |
Can't the tube just go one day without some major fsckup?
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Can't the tube just go one day without some major fsckup?
On Feb 18, 9:01*pm, Paul Corfield wrote:
example. *Total time was an unacceptable 30 minutes but that is how long it was. Ok 30 mins , I was just going by what the bbc news report said. Even so , its still too long. Probably not an issue in winter but if it had been summer with a packed train and 40C temp? scotched and clipped or remotely secured (if that technology is in place) to ensure the points don't move under a moving train. *Whether Why would they? Do points often randomly move on their own when a signals fails to red or whatever the victoria line equivalent is? Can't they be controlled remotely from the control room or has that cutting edge technology not made it there yet? I disagree with the above statement because no one has died and Yet. I don't expect you to accept anything I've written but I have tried to give you a reasoned explanation. *If it is any consolation I get just as I'm sure everything you've written is accurate , but it also comes across as "well we've made a few changes but basically this is the way it is". B2003 |
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