How we measure
On time means at most 1 minute early and at most 3 minutes late. Everything is recalculated every night.
Styria: every trip with real time, at every stop, once it has passed it. ÖBB trains additionally stop by stop.
The trips that are often late are an estimate from the last 90 days. Recent days count more, and few measurements are pulled toward the line's average for that hour.
Data sources: Vienna — City of Vienna, data.wien.gv.at (CC BY 4.0). Styria — open real-time data (GTFS-RT and TRIAS OGD); data source: Mobilitätsverbünde Österreich OG – data.mobilitaetsverbuende.at. Rail — ÖBB-Infrastruktur AG and ÖBB-Personenverkehr AG (CC BY 4.0). Analysis: ÖffiGo, not an official statistic.