BePünktli is a timetable for the whole of Switzerland. Every connection shows how reliable it was over the last twelve months: how often the train, bus or tram arrived on time, how large the delay usually is and how often the connecting service was caught.
The figures come from the actual data that opentransportdata.swiss publishes every day for all public transport in Switzerland. We have archived it since 1 January 2022, which is more than 3.7 billion reported stops. Every arrival is compared with the timetable that applied on that day. An arrival counts as punctual when it is less than three minutes late. How we measure is set out in the methodology.
Every line, every stop and every operator has a page of its own with punctuality, cancellations and the trend over the months. The pages are linked from the connections. The blog says what stands out in the data.