Richard J. wrote:
Paul Corfield wrote:

On Fri, 14 Jul 2006 23:33:23 GMT, "Richard J."
wrote:

Paul Corfield wrote:


There are off peak journey times shown on timetables for each tube
line on the Journey Planner so you can see exactly how long a trip
should take. Peak trips obviously take substantially longer due to
more trains running and extra congestion.


Obviously? More trains running ought to make journeys quicker.
But it would need better signalling and/or ATO and/or operating
efficiency to prevent the increased dwell times that make journey
times longer. London is still catching up with Paris in this
respect, 20+ years later.


I take the point but we all know that LU is not at that level of
sophistication yet. Lines like the sub surface ones tend to crawl
in the rush hours as there are so many flat junctions and without
absolutely on time running you will get tail backs.

The same is true for the Northern and Piccadilly Lines where Camden,
Kennington, Arnos Grove and Acton Town are all pinch points.


Acton Town is only a pinch point because of slack operating practices.
In each direction there are two platforms to handle 31 tph (24 tph
Piccadilly and 7 tph District in the peaks). In my experience, the
trains queue up on the approach to Acton Town because crew changes are
often too slow and signallers don't make full use of both platforms.
(I'm not familiar enough with the others you mentioned to comment on them.)


Hi Gents

Sorry been away to the South coast for the weekend to escape the heat
(not much success though).

I have been tempted to look up the TfL website to cross reference a few
times, but am not sure if their information is in the public domain or
not (by that I mean I can actually use it on my site without violating
some kind of copyrights).

I was hoping maybe the site could be self maintaining, but from the
sound of the feedback I get, that is pretty unlikely to happen as people
are more interested in using it and pointing out the problems rather
than contributing to it. It is fair I guess, as a tube timetable is a
non trivial thing to maintain, like Paul pointed out. Ah well, never
mind, with this kind of weather, only fools and horses work. I am off
down the south coast again :-)

Thanks for your contribution.

David