We give the cause engine facts. We never give it causes.

What it reads

• Counts by day type and hour: scheduled trips, trips cancelled, trips that did not come, and stops judged on time, early, late, skipped or missing.
• The same counts by day.
• Each missing trip with its first-departure hour and its timetable block, and whether it is the first trip of that block that day.
• The median delay at each timepoint in order, by direction, day type and hour.
• Places where buses slow: the median added delay between two timepoints in a row, over days, and how many days show it. A place is listed when the median shows a clear added delay.
• Planned and actual speed between anchor stops, slowest first. Both use the same distance, so they compare with each other and are a lower bound on road speed.
• The spacing of buses by day type and hour.

What is not available

Which garage a block belongs to, and whether a trip follows a driver change: no source holds them. How late a bus leaves its last stop: departures are not captured.

Where the numbers come from

• Our measurements
• Published timetables, dated

Method version and change log

Kìzis kà-mazinaigàdeg kawin wìkà andjisesinon. Kìshpin method andjisideg, gete kìzisan ganawendanòn method kà-àbadjitòwàd.

• Ozhibii'igan 1 · October 25, 2026. First published. Measured facts for the cause engine.