Here are some interesting points:
...Excess journey time increased by 0.15 minutes to 5.38 minutes this period. This was
due to a higher number of signal and track related incidents...
There were 55 unplanned station closures in the period, with a total duration of 42 hours which represents just 0.03% of scheduled station opening hours.
The most significant causes of station closures this period were Staff Absence / Shortage (19); Customer Action (11) and Lift & Escalator Failures (9)...
The number of lost customer hours (LCH) increased from 2.1 million in period 5 to
2.6 million in period 6.
Incidents on the Jubilee line caused by fallen tunnel telephone wires and points failures as well as some bedding in issues with the new signalling, and problems with a track circuit on the Victoria line following works over the August Bank Holiday weekend, contributed to this increase...
Via Londonist, which has a short summary of the report:
‘Lost customer hours’ increased from 2.1m in July/August to 2.6m – mainly the Jubilee and Victoria lines’ fault again – but that’s still significantly better compared with the same time last year. Other measures are improving on a year-by year basis: total journey time, station closures and excess journey time. Track-related delays are down, but delays due to signals and points have shot up (174 in Aug/Sep 2010, 224 this year).
A figure that might worry the Olympic planners is that more people are using the tube: there were 80.9m passenger journeys in the period the previous year, but 84.1m this year, 700,000 more than TfL’s target.