How is the Reliability KPI calculated?
Shown below is the default behaviour if no customisation has been requested.
Reliability is calculated against scheduled timing points. In the example above, the journey would get a reliability rating of 75% as the vehicle was actually seen at 12 of the 16 timing points it was scheduled to be seen at.
Timing points are used to estimate the number of miles operated relative to those scheduled to be run
The Reliability KPI can be summed up as - how many scheduled timing points was the vehicle actually seen at?
Starting from 2 March 2025 we have excluded timing points from completely cancelled trips when calculating the Reliability KPI. As a result, users may notice an improvement in their Reliability scores, if they had trips that were completely cancelled (ie not partially run, then cancelled) within the selected date range.