On Apr 2, 1:36*pm, wrote:
On Thu, 02 Apr 2009 13:03:13 +0100

Uncle Toby wrote:
Unusually for the time, there were no side doors to the drivers cabs
on 1967 TS, probably for similar reasons (press the buttons, train
starts moving, try to get out for some reason and wind up half inside
and half on the platform at Seven Sisters). ISTR that when 1960TS

Presumably they credit the current central line drivers with a bit more
self preservation instinct. Either that or the cab doors are interlocked
with the ATO.

B2003

Sliding cab doors came in with 1973 stock I think. Before that
(including 1960 stock) it was door handles and hinges, so nothing to
interlock.