Clive D. W. Feather wrote:
In article .com,
Adrian Auer-Hudson writes
1. Turning crossrail trains back @ Paddington is just crazy when
there
is a lack of capacity in the mainline station.

Capacity in the mainline station won't be involved. The trains will
"tip
out" at the new Crossrail island platform, run forward to a siding
between the tracks around Royal Oak, then back into service on the
other
side of the same island platform. They never go near (except
vertically)
the main terminus.

I'm told that the sidings will be authorised for passenger use so
that
there's no need to search the terminating trains by hand. This is
necessary to provide the capacity.

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Clive,

The point I endeavor to make is: Paddington mainline is at capacity.
So, why are we not planning to extend all crossrail trains out into the
western suburbs? In doing so, crossrail trains replace current
terminating paths on the GW relief lines. By which method maximum
capacity is freed up in the terminus.

Adrian.