"Richard J." wrote in message


Some people use "articulated" to mean permanently connected cars with
a wide interconnecting gangway, and others use the word to mean cars
that have a shared bogie. Anyone using the word on this newsgroup
should first define which definition they are using.

I was only aware of the shared-bogie definition of articulated trains.
In my view, the other definition is simply a misunderstanding.

On the Paris Métro all the trains from 1989 onwards have
interconnecting gangways but conventional bogies. The only trains
with shared bogies are the experimental MF88 on line 7bis; the bogies
proved troublesome
and were not used on later stocks. Incidentally the train referred to
as "MF2000" is now known as MF01.

The video I found certainly seems to show proper, articulated trains,
with shared bogies.


I suspect that the lack of wide gangways on 2009 stock is because
Bombardier/Metronet could meet the terms of the PPP contract without
them, and LU had no leverage under PPP to force any major design
changes. LU are certainly now pursuing more radical design options
for the replacement of 1972/73 stock, e.g. the Siemens offering
described at
http://www.railwaygazette.com/nc/new...ept-train.html

Yes, I agree that the PPP contract led to a timid, conventional design
for the 2009 stock. LU had long been been pursuing the idea of
articulated trains with open gangways for the replacement Victoria line
stock (the 'Space train' --
http://www.flickr.com/photos/stephenk1977/108328170/), but the
misconceived PPP contract put the kibosh on it.