Steve Dulieu wrote:
"Dave" wrote in
message ...
Rob writes
I wonder if the current Northern line trains were built
to allow for a future conversion to Central line style
automatic train operation.

yes they are, all the buttons are there, not sure if
atp/ato contorllers have been installed.

Good news!

I wouldn't hold your breath, '73 stock (Piccadilly) were
built with the buttons to allow for Victoria like ATO. they
were never used and were taken out (those that hadn't
already fallen out) when the stock got refurbed.

The wiring etc for OPO operation was in place in 73s when first introduced
bt there were no buttons in the cab other than those for opening and closing
the doors.