On Jul 13, 10:27 pm, D7666 wrote:
But then again, is there not still spare 1972 cars in store ? Why not
use those for victoria line capacity ? Or is this all linked in with
only having the new ATO on new trains and abandoning the old ATO
system ?

There's no space to run any more trains. They need to be able to run
closer together, which means new signalling and better acceleration/
braking and improved dwell times (eg bigger doors), all of which
points to replacing the stock. The trains will also be slightly bigger
and a few feet longer, and the aisles/vestibules will be bigger,
allowing a few more people on each one.

U

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