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Post by Deleted on Mar 12, 2006 17:48:39 GMT
Have the various plans tossed around to build a third platform at Ruislip and make the station "double-ended" ever produced any possible signalling diagrams? If not, I'd like to try to make one  |
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Post by Deleted on Mar 13, 2006 22:19:43 GMT
The best layout for a three platform intermediate station in my opinion would be, outbound track-platform-centre track-platform-inbound track, with the centre track connected to the main running lines by a "Y" at each end.
I would have thought that Rayner's Lane was more in need of three platforms than Ruislip, as more trains reverse there, as well as it being located near a junction.
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Post by Deleted on Mar 13, 2006 22:42:00 GMT
Unless the money can be found to completely reconstruct the station and road bridge to provide the space needed for additional tracks, Rayners Lane is unlikely to be rebuilt. Ruislip is much less difficult, as there is only a signal box, AET depots and stroage buildings standing in the way.
And I have a feeling that Ruislip would be built with the current down (westbound) platform changed into a bidirectional terminating platform, with the new down (westbound) platform running around the outside of the existing platform, similar to Putney Bridge but without the speed restriction. Given the careful nature of signalling design, you would need trap points on the western edge of the bidirectional platform road in order to provide flank protection and allow a high-speed entry (the other side has more than enough space for overlaps).
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Post by Deleted on Mar 13, 2006 23:14:42 GMT
ruislip does not have a aet depot btw nearest ones are rayners lane and uxbridge uxbridge is the main one as rayners lane is now a satelite depot (hardly used)
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Post by edb on Mar 14, 2006 7:38:05 GMT
If you are that desperate for a extra platform ad Rayners then why not utilise the old sidings?
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Post by Deleted on Mar 14, 2006 8:29:05 GMT
Because the IMR and the road bridge are in the way.
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Post by Deleted on Mar 14, 2006 22:30:37 GMT
Because the IMR and the road bridge are in the way. Well, rebuild the bridge and IMR then! (The IMR will probably be replaced in circa 5 years time when the ATO system is installed on the Met). |
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Post by Deleted on Mar 14, 2006 22:56:11 GMT
(The IMR will probably be replaced in circa 5 years time when the ATO system is installed on the Met). 5 years? Yeah, right. They might just about have replaced the A stocks by then... |
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Post by Deleted on Mar 14, 2006 23:37:26 GMT
For some reason I find it difficult to believe that the Uxbridge branch will be one of the first parts of LU to receive the new ATO systems - especially considering that no one will finally make up their minds and say "the little blue trains must go to Heathrow and the big proper trains must go to Uxbridge", solving the problem in one fell stroke...
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Post by Deleted on Mar 15, 2006 1:08:06 GMT
Well, rebuild the bridge and IMR then! (The IMR will probably be replaced in circa 5 years time when the ATO system is installed on the Met). There's an optimistic man for you ;D |
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Post by Deleted on Mar 15, 2006 7:19:39 GMT
try about 2012 at the earliest
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Post by Tomcakes on Mar 15, 2006 19:35:42 GMT
Naah, since it's not pertainign to the Olympics it will be much later than that...
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Post by Deleted on Mar 15, 2006 20:11:44 GMT
thats the only part of the met line using jointless track circuits so it would be easy to install the kit there first to make sure it works first they dont want another jubilee line cock up as westinghouse has the contract for re-signalling ssl
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Post by Deleted on Mar 15, 2006 22:58:41 GMT
thats the only part of the met line using jointless track circuits so it would be easy to install the kit there first to make sure it works first they dont want another jubilee line cock up as westinghouse has the contract for re-signalling ssl Precisely! According to Metronet's website the new signalling system will be fully operational by 2013. It will likely to be tested, and in partial operation well before then. |
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Post by mandgc on Mar 17, 2006 23:34:02 GMT
Ruislip Station-
The road bridge to the West of Ruislip Station was built with two spans to enable an additional two tracks to be provided 'in the future' to the South of the station and the S bend in the running lines approaching from the East would have allowed the Westbound line to run straight into an additional platform ( or non stopping loop )
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