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London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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#1
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£1 flat fare tube
In article , Roland Perry
writes I've seen them doing maintenance of the Atlanta Marta (which is similar to a Met/District Line style of urban commuter railway) late in the evening by working on one track and having alternate-working on the other. No doubt the UK's safety mafia would disallow this!! Alternate working requires a sufficiency of crossovers to switch trains. The tube lines don't have these, in general. There's also a problem with trainstops - they need to be lowered to prevent a train running the wrong way from "back-tripping". Except where bidirectional working is allowed (e.g. at termini) this isn't designed into the signalling. -- Clive D.W. Feather | Home: Tel: +44 20 8495 6138 (work) | Web: http://www.davros.org Fax: +44 870 051 9937 | Work: Please reply to the Reply-To address, which is: |
#2
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£1 flat fare tube
In message , Clive D. W. Feather
writes Alternate working requires a sufficiency of crossovers to switch trains. The tube lines don't have these, in general. A design fault, then. There's also a problem with trainstops - they need to be lowered to prevent a train running the wrong way from "back-tripping". Except where bidirectional working is allowed (e.g. at termini) this isn't designed into the signalling. Another fault. [These are excusable when the tubes were originally designed for normal working hours. I think we forget how little of life was 24x7 as recently as 30 years ago. I could certainly drive from Cambridge to Chelmsford at midnight and see no other car on the road. At some point this changed radically - perhaps the tubes need to keep up.] -- Roland Perry |
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£1 flat fare tube
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#4
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£1 flat fare tube
In message ,
Colin Rosenstiel writes More a concept fault for tube tunnels. Not a problem with cut-and-cover tunnels but then London's tubes aren't based on them. Most of the "Underground" system is either above ground, or in twin-track cut and cover. -- Roland Perry |
#5
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£1 flat fare tube
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#6
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£1 flat fare tube
In message ,
Colin Rosenstiel writes Most of the "Underground" system is either above ground, or in twin-track cut and cover. Not in Zone 1 though. No, but being able to run 24x7 round the Circle, and on many of the lines outside, would be much better than nothing. -- Roland Perry |
#7
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£1 flat fare tube
In article ,
Roland Perry wrote: In message , Colin Rosenstiel writes Most of the "Underground" system is either above ground, or in twin-track cut and cover. Not in Zone 1 though. No, but being able to run 24x7 round the Circle, and on many of the lines outside, would be much better than nothing. There's not much point in Leytonstone - Epping running 24/7. Or even Stratfor - Epping (although there is slightly more point in the latter). I agree about the circle, though. -- You dont have to be illiterate to use the Internet, but it help's. |
#8
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£1 flat fare tube
Roland Perry wrote:
In message , Colin Rosenstiel writes Most of the "Underground" system is either above ground, or in twin-track cut and cover. Not in Zone 1 though. No, but being able to run 24x7 round the Circle, and on many of the lines outside, would be much better than nothing. True, but the starting point isn't nothing. It's the most extensive night bus network in the world. -- Richard J. (to e-mail me, swap uk and yon in address) |
#9
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£1 flat fare tube
In article , Roland Perry
writes [These are excusable when the tubes were originally designed for normal working hours. I think we forget how little of life was 24x7 as recently as 30 years ago. I could certainly drive from Cambridge to Chelmsford at midnight and see no other car on the road. At some point this changed radically - perhaps the tubes need to keep up.] The answer, of course, is cost. Digging new crossover tunnels isn't cheap. Signalling changes are cheaper, but is it a better way to spend the money than running night buses instead? -- Clive D.W. Feather | Home: Tel: +44 20 8495 6138 (work) | Web: http://www.davros.org Fax: +44 870 051 9937 | Work: Please reply to the Reply-To address, which is: |
#10
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£1 flat fare tube
In message , Clive D. W. Feather
writes Digging new crossover tunnels isn't cheap. I wouldn't suggest new tunnelling. -- Roland Perry |
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