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4. Performance of the transport networks
in the series. Performance in 2013/14 was very marginally lower, with 97.5 per cent
of scheduled train kilometres operated.
Underground reliability can also be expressed in terms of customer-focused
measures such as average journey time and excess journey time (see table 4.3). The
latter is the additional time that customers have to wait over and above that implied
by the schedule as a result of unreliability in the service. Excess journey time has
continued to fall in 2014/15, from 5.2 minutes in 2013/14 to a record low of 4.6
minutes in 2014/15.
Table 4.3
London Underground – service reliability and journey times.
Year
Train
kilometres
scheduled
(millions)
Percentage
of scheduled
kilometres
operated
Average
actual
journey time
(minutes)
Average
generalised
(weighted)
journey time
(minutes)
Excess
journey time
(weighted)
(minutes)
Excess as %
of
generalised
journey time
2000/01 69.6 91.6 28.6 45.7 8.6 18.9
2001/02 70.4 92.9 28.3 45.2 8.1 18.0
2002/03 71.8 91.1 29.1 46.7 9.7 20.7
2003/04 72.7 93.1 27.9 44.3 7.4 16.8
2004/05 72.9 95.3 27.7 44.0 7.2 16.4
2005/06 73.6 93.6 27.8 44.3 7.5 16.9
2006/07 73.8 94.5 28.0 44.7 8.1 18.0
2007/08 74.4 94.8 27.8 44.5 7.8 17.4
2008/09 73.2 96.4 27.5 43.9 6.6 15.1
2009/10 71.8 96.6 27.7 44.1 6.4 14.5
2010/11 72.1 95.6 28.0 44.6 6.5 14.6
2011/12 74.6 97.0 27.5 45.1 5.8 12.9
2012/13 77.5 97.6 26.8 43.6 5.3 12.1
2013/14 78.2 97.5 26.8 43.4 5.2 12.0
2014/15 82.3 97.6 26.5 42.3 4.6 11.0
Source: London Underground.
1. Excess journey time is the difference between actual journey time and that expected if services run to time, and weighted to
reflect how customers value time.
4.7 Modal performance indicators: Docklands Light Railway
Since 2000/01 the Docklands Light Railway (DLR) has doubled the number of
kilometres operated from 2.9 million to 5.8 million, as shown in table 4.4 –
reflecting both network expansion and enhanced service levels. The year 2014/15
saw the percentage of scheduled services operated reach a record level of 99.3 per
cent. To bring the DLR in line with other TfL modes, in 2014/15 the ‘percentage of
trains on time’ measure was replaced by a measure of Excess Waiting Time (EWT),
which has been back-cast to 2011/12 for comparison. 2014/15 saw an EWT figure
of 0.07, which is the lowest of the series so far.
79 Travel in London, Report 8