Tube Delays: Piccadilly Line

Tube escalatorSignal problems are the biggest cause of disruption on the Piccadilly line.

Staff issues, including industrial action and problems with the train fleet are the other significant issues.

Delays are measured by what TfL call 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 205,014 Lost Customer Hours per period on the Piccadilly Line.

LCH Piccadilly

The Piccadilly ranks in 4th place for the worst record on the network, but it has improved considerably in the past 10 years. It has reduced Lost Customer Hours by 69% in the pas 3 years compared to 2003/06.

Source data

See also

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Tube Delays: Metropolitan Line

Oyster Reader Tom Page Wikimedia commonsThe Metropolitan Line is the oldest on the Tube network and the oldest underground line in the world, starting life in 1863 as the Metropolitan Railway running between Paddington and Farringdon.

Despite its age it has one of the lowest levels of delays on the network. Signal failure is the main cause of lost time, accounting for 23% of delays, compared to a network average of 14%.

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 94,441 Lost Customer Hours per period on the Metropolitan line.

LCH Metropol

Along with the District, Circle, and Hammersmith and City lines a modernisation project is about to get underway on the Metropolitan including up dates to the signals system, which TfL admits “belongs in a museum” although still functions safely.

Source data

See also

Central Line leads the lost hours league table of your Tube delays

Strikes are a commuting disaster, but what delays your daily Tube journey?

Passenger data reveals busiest stations where Tube strike will hit hardest

Tube Delays: District Line

Girl's boots-2Signal failure is the biggest single factor that caused delays on the District Line in 2014/15, which will come as little surprise to its passengers.  35% of the time lost though delays was caused by signal problems compared to just 14% for the whole Tube network

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 222,088 Lost Customer Hours per period on the line. This makes it the third highest on the network.

LCH District-2

Over the past 10 years as Lost Customer Hours have been reduced across the network the District line has reduced LCH by 57% comparing the average for 2003/06 with 2012/15.

TfL’s next round of modernisation work will target 3 of the oldest tube lines, including the District line, to upgrade a signaling system that the company says “belongs in a museum, having been operating safely, but in a very basic way, since the early years of the last century.”

Source data

See also

Central Line leads the lost hours league table of your Tube delays

Strikes are a commuting disaster, but what delays your daily Tube journey?

Passenger data reveals busiest stations where Tube strike will hit hardest

Tube Delays: Circle/Hammersmith and City Lines

tube train interiorStaff issues accounted for nearly 40% of the delays on the Circle and Hammersmith and City Lines in 2014/15. About half of this was simply staff absence and shortages.

As with other lines, signals failures, train fleet problems and action by customers were the big factors.

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 165,973 Lost Customer Hours per period on the lines. This makes it middle ranking in terms of performance across the network.

LCH Circle Hamm

Over the past 10 years as Lost Customer Hours have been reduced across the network the Circle and Hammersmith and City lines have shown one of the biggest improvements with a 63% reduction in LCH comparing the average for 2003/06 with 2012/15

Since 2009 the Circle and the Hammersmith and City line have operated as a end-to-end service, perhaps more a spiral than a circle running from Hammersmith to Edgware Road via Aldgate.

Source data

See also

Central Line leads the lost hours league table of your Tube delays

Strikes are a commuting disaster, but what delays your daily Tube journey?

Passenger data reveals busiest stations where Tube strike will hit hardest

 

Tube Delays: Central Line

tube speeding pastThe Central Line suffered the highest level of delays of any line on the Tube network in 2014/15. Apart from industrial action, which happens in one off events, the biggest cause of delay was train fleet problems. This accounted for more delays on the Central Line than any other.

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 410,144 Lost Customer Hours per period on the line. That is 29% higher than the second most delayed line, the Jubilee.

LCH Central

Over the past 10 years as Lost Customer Hours have been reduced across the network the Central line has remained a persistent offender. It has shown the least improvement in all lines since 2003/04.

The Central Line opened in in 1900 and its flat fare of 2 old pennies from Bank to Shepherd’s Bush earned it the nickname of the Tuppenny Tube. In the 1990s it became the second line after the Victoria to introduce automated operations where the train is largely controlled by a computer system monitored by a driver. Unlike the Victoria Line, automated operations are not a significant cause of lost hours on the line.

Source data

See also

Central Line leads the lost hours league table of your Tube delays

Strikes are a commuting disaster, but what delays your daily Tube journey?

Passenger data reveals busiest stations where Tube strike will hit hardest

Strikes are a commuting disaster, but what delays your daily Tube journey?

tube coming to station-2The Tube strike hitting London today will bring chaos to the city as millions who rely on the Underground to get to work resort to cars, bikes and unfamiliar bus routes to navigate their journeys.

Industrial action brings the system to a halt and has a catastrophic impact on the statistics TfL uses to measure the performance of the Tube. But away from strike days how is that performance measuring up, and what lies behind all those delayed trains and long waits in tunnels? Urbs decided to find out.

The good news is that the performance in terms of delays is getting better – 56% better looking at the average for 2003 to 06 compared to the last 3 years according to Urbs analysis – but as everyone seems to know anecdotally, some lines are better than others.

We looked at the statistics on delays for the past 10 years in what TfL calls the London Underground Performance Almanac. The key measurement is called Lost Customer Hours. This benchmark is calculated by multiplying the delays in minutes by the number of passengers. TfL records all delays over 2 minutes.

TfL uses the financial year from April to March and splits the year in 13 equal periods for performance measurement. Back in 2003/04 the average number of Lost Customer Hours (LCH) per period was 4 million. By last year it had come down to 1.7 million.

Put another way, in 2003/04 the Tube had a total of 52.2 million LCH, and in 2014/15 22.6 million. As it is quite hard to get your head around that number of hours, a year is 8,760 hours. An 80-year lifetime (current average London male life expectancy) is 700,800 hours. So delays have reduced from 74 London lifetimes to 32.

This may be good to know next time you feel you have waited a lifetime for a Tube, but what causes delays when it is not striking drivers?

Most lost hours are caused by problems with the train fleet, signals and what TfL calls customer actions. As our multi-coloured chart shows, the red, pink and black blocks representing these causes feature strongly every year.

Tube Causes LCH

The chart also shows the impact of one-off events such as strike action in 2010/11 and 2013/14, marked in orange, and the security clampdown following the 7/7 bomb attacks in 2005/06, marked in blue, which contributed 10.4 million LCH that year.

One-off events cause major disruption but their impact comes in precise peaks. The orange in the chart below shows how industrial action contributed to Lost Customer Hours last year, but the consistent problems were the red, pink and black blocks of fleet, signal and customer caused delays.

Tube LCH 2014-15

While overall performance has improved some lines are doing better than others. The Northern Line is most improved, though many of its regular users will tell you that it needed to be. The Central line has made the least progress in 10 years.

Tube delay improvement

In the past 12 months the Central Line has continued to struggle at times and delays have increased recently on the Jubilee Line.

Tubes lines delays 2014-15

The disruption of strike action is severe but mercifully short-lived. The longer term causes of delay are the key variables in any mass transit system – its trains, reliability of infrastructure and passengers. Next time you’re stuck take heart and remember, the trend is for fewer delays.

Source data

See also

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