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The number of trains that arrive on time has risen dramatically since we took over the running of Britain's railway in October 2002
The Public Performance Measure (PPM) shows the percentage of trains which arrive at their destination on time.
PPM combines figures for punctuality and reliability into a single performance measure. It is the industry standard measurement of performance.
Nationally around 60% of delays to train services are attributed to us. As well as infrastructure faults, this figure includes external factors such as weather, trespass, vandalism, cable theft etc. These external factors account for approximately one third of the delays attributed to us and 20% of all national delays.
The national Public Performance Measure is 86.2%.
This compares to 88.9% for the same period last year.
The moving annual average (MAA) is 90.5%.
The table below shows the average Public Performance Measure for Britain as a whole and by train operating company. The moving annual average (MAA) is calculated over the 365 days to 9 November 2013.
A breakdown of each operator's performance, known as sub-operator PPM, is available to download:
Sub-operator PPM, period 8 2013/14
Right-time performance measures the percentage of trains arriving early or within 59 seconds of schedule. The process for gathering data of this accuracy is currently not 100% reliable and the industry is working on improving the quality of this information to make right-time data more reliable.
The moving annual average (MAA) is calculated over 365 days to 9 November 2013.
Performance by sector 1997 to 2013:
Note: unless specified otherwise, all data on and linked from this page is for initial indications only and is subject to change in subsequent publications.
PPM measures the performance of individual trains advertised as passenger services against their planned timetable as agreed between the operator and Network Rail at 22:00 the night before. PPM is therefore the percentage of trains 'on time' compared to the total number of trains planned. A train is defined as on time if it arrives at the destination within five minutes (ie 4 minutes 59 seconds or less) of the planned arrival time for London and South East or regional services, or 10 minutes (ie 9 minutes 59 seconds or less) for long distance services. Where a train fails to run its entire planned route calling at all timetabled stations it will count as a PPM failure. Heathrow Express, Grand Central, Hull Trains and Eurostar are not included in the national PPM.