價格：免費
更新日期：2019-09-14
檔案大小：8.0M
目前版本：3.002
版本需求：Android 4.0 以上版本
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The public performance measure (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.