Longer dwell-times on extension stations?

Could it be something to do with the doors on the platforms?

I've noticed this even at quiter times of the day.

As I driver I believe it is you. Depending on how early I might be running will then depend on how long I am waiting at particular stations for a green signal. Simple.

The two longest times I can see on that list are 45 seconds, at Bond Street and Green Park. Myth busted, perhaps! I can only shudder to think what those times would have been if the 83s had soldiered on.

I thought it was the inadequate signalling, installed at the last minute for 2000, which causes blocking back.

Well the service interval on the extension certainly doesn't seem to compare with, say, the Central or Piccadilly Lines

This is a theme that has run through the extension of the line. On the old side, when the signalling computer looks at late-running (or is interrogated for it at a later date) the time is rounded to half-minute intervals.

On the extension, they have the ability to see late-running down to the exact second.

When it comes to doing the number-crunching for how many trains they have run through the line in the peak (to satisfy those at Canary Wharf) it's shown as "every minute or so" on the old side, but precise timings are shown on the extension.

I've no doubt that when the old side is finally put into Neasden later this year (beginning of next-ish) all of the dwell times / headways / late-running calculations will be shown to the exact second.

I doubt very few trains actually achieve the exact published dwell time, so it does make it a pretty pointless exercise, but no doubt someone somewhere has the job of working out which trains did or did not acheive it. Keeps that someone in work I suppose, but it's hardly the way to run a railway.

Didnt they used part of the old signalling for the Jubilee Line extension when they abandoned moving block?

Will the timetables then be created to 1 second accuracy?

It could be either, but I fear stephenk may be closer if the second-watching they do at present is anything to go by.

Can you seriously imagine a scenario where a train is consistently 3.5 seconds late at each station, and the driver is hauled over the coals to find out why he/she did not "perform" at each station. Or the train is taken out of service for a "download" of data to check why it could not achieve its booked running time.