The Jubilee is the newest Tube line but it faces an age-old problem for every urban underground – delays caused by its passengers. This was the single biggest factor in 2014/15 causing 22% of time lost compared to 17% for the whole network.
Delays caused by what TfL calls “customers and public action” include commuters taking ill, items dropped on the track and people jumping in front of trains. The grim “person under a train…” message is familiar and more than 20 people a year kill themselves on the Underground.
Transport for London measures delays in what it calls Lost Customer Hours (LCH). These are calculated by multiplying the delays in minutes by the number of passengers. TfL records all delays over 2 minutes. It uses the financial year from April to March and splits the year in 13 equal periods for performance measurement.
Data in the London Underground Performance Almanac for the last full year shows there was an average of 292,033 Lost Customer Hours per period on the Jubilee line. This makes it the second highest on the network after the Central line.
While the Jubilee line has seen an improvement over the past 10 years in Lost Customer Hours the numbers rose slightly at the start of 2015/16 year in April.
The Jubilee line is the only line to see “stations” listed as a significant source of delay. Although the line was opened as recently as 1979 a number of its stations date back 100 years and were used by other lines originally. The line was extended in the 1990s though the Docklands to Stratford.