An "Actual Trip" is one in which a train departs from the published originating station no later than 45 minutes after the published departure time and travels to the published terminating station and during which passengers can board and alight at all operational intermediate stations.
A "Part Completed Trip" is one in which a train departs from the published originating station no later than 45 minutes after the published departure time, and travels as far as (or further than) half of its published journey, allowing passengers to board and alight at all operational intermediate stations but does not reach the published terminating station. For the purposes of the performance measure, a Part Completed Trip shall count as 0.25 of an Actual Trip.
An Actual Trip or Part Completed Trip occurs even if the train is replaced en route, provided that the passengers are able to transfer between the original and a replacement tram.
The scheduled number of trips ("Scheduled Trips") for reliability measurement purposes shall be the number of Actual Trips shown in the timetable for the day or month concerned.