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Abbey Wood, latest pictures
bob wrote:
Recliner wrote: wrote: On Fri, 02 Sep 2016 13:46:50 +0100 Recliner wrote: I must admit I don't understand why Crossrail and the North Kent line have separate island platforms, rather than having the Crossrail pair between the third rail tracks, thus allowing cross-platform interchanges. The down third rail track could have been re-routed to the north of the portal, so that it was on the north, rather than the south of the new Crossrail pair. With that arrangement, both down tracks would flank one island platform, and both up platforms the other. It would save a lot of passengers the hassle of having to cross from island platform to the other. Presumably that would require the crossrail tracks to cross the 3rd rail ones complicating signalling, power supply isolation and causing potential hold ups on both lines due to a problem on the other. No it wouldn't. The Crossrail portal would be between the up and (slewed-north) down third rail tracks. The Crossrail tracks would stay between the third-rail tracks until the former's buffer stops at Abbey Wood. Beyond Abbey Wood, the two third-rail tracks would come together again and resume their former alignment towards Dartford. It would be a bit like how the diesel track pops up between the two Central line tracks at Greenford. It's a while since I've been down that way. What is the Crossrail alignment between Woolwich and Abbey Wood? For Crossrail to run between the 3rd rail lines requires the Crossrail route to pass under a realigned down 3rd rail line at some point, or if the Crossrail lines were run as the outer pair, the westbound Crossrail line would need to pass under both 3rd rail lines. Incidentally, how are the Crossrail lines named in terms of "up" and "down"? I've read that it will use Tube-like Eastbound and Westbound on its own segregated tracks. Presumably it'll use the existing Up and Down terms on shared tracks, like the GWML. |
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