On 14 May, 10:19, wrote:
On Fri, 14 May 2010 09:47:16 +0100
"Recliner" wrote:
underground. The 2009 stock can't operate on any other Tube line, and
I wonder if thats really true. The victoria line runs through some old piccadilly
line tunnels at finsbury park and the 2009 stock I rode on managed it without
clipping the tunnel walls.


Different signalling systems and method of safe operation. There's
more to it than train/tunnel size.

PhilD

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