On Jan 6, 8:48*pm, G1206 wrote:

In comparison to the Central and Victoria line systems, the Jubilee
ATO drives the train at a very humble and civilised pace,


I believe that pre-ATO the 1996 stock (and Northern 1995s) were
restricted to 60-70% power - now that ATO is in operation have they
been let off their leashes? It was difficult to notice any significant
acceleration/braking difference.

You are correct.

The stage in the program that has just been implemented is J4 (Jubilee
line stage 4) although todays J4 is really made up of the original
J2+J3+J4 added together. It means ATo between Stratford and Dollis
HIll AFAIK. J5 completes ATO to Stanmore, then after that there is J6
which brings in a new working timetable along with unscrewed traction
packs. At the moment the traction packs and dynamic braking effort is
limited to the consraint of clockwork signalling. Once unscrewed the
line will have greater acceleration and braking rates.


--
Nick