New data released by Greater Wellington Regional Council shows 482 fewer cancellations on Tranzurban services in the last week of July since the timetable was introduced, compared with the month's first week.
Despite changes to the timetable Tranzurban dropped most services, cancelling 2342.
Metlink general manager Scott Gallacher said they are monitoring the performance of the new timetables as drivers and passengers get familiar with the changes.
"We're starting to see early signs that the timetable changes are having the intended effect. Since the introduction of the new timetables, Tranzurban services have seen a 4.2 per cent reduction in cancellations."
Overall, there were 3350 cancellations across Wellington's bus operators, down from the record breaking 3572 services cancelled in June.
Even though the timetable for NZ Bus is yet to be re-jigged, the operator cancelled 47 fewer services between the start and end of July.
"This is due to our ongoing work with NZ Bus to stabilise services and comes ahead of timetable changes that are designed to bring even more certainly to passengers in the coming months," Gallacher said.