- Lettura
- Metodologia dei dati
- Autobus che arrivano ravvicinati
The share of back-to-back buses on a route that arrived much closer together than the timetable planned for those same two trips.
- Definizione
- The share of back-to-back buses on a route that arrived much closer together than the timetable planned for those same two trips.
- Formula
- At each stop, buses of one route and direction are put in the order they arrived. For each pair, the observed gap is compared with the scheduled gap between the same two trips. Bunched: observed gap under 0.25 times the scheduled gap. Long gap: over 1.75 times. Share = bunched pairs divided by judged pairs.
- Unità
- percent of judged pairs, with the count of pairs
- Popolazione
- Pairs of buses on the same route and direction that arrived one after the other at the same stop, from settled final predictions.
- Periodo di misurazione
- The 28 most recent completed service days, by calendar date in Ottawa.
- Copertura
- Only days the daily rollup computed. Days with partial feed capture and days when the live trip numbers did not match the timetable are left out and listed.
- Idoneità alla pubblicazione
- A pair is judged only when the timetable planned 2 to 30 minutes between those two trips. A route needs at least 30 judged pairs before a share is shown.
- Ambito
- Every bus route with judged pairs, by hour band: early 4 to 6, morning rush 6 to 9, midday 9 to 15, afternoon rush 15 to 18, evening 18 to 22, night 22 to 4 (Ottawa time).
- Cosa può sostenere questo numero
- A high share means buses often come together and then leave a longer wait behind them. It is not a count of late buses.
- Fonti e identificativi
- Metodo · Daily reliability-pattern method
settled-reliability-patterns-daily-v2 - API attuale · Bunching, slow segments and on-time by hour
reliability-patterns
- Metodo · Daily reliability-pattern method
Stato di attuazione
- Fonte candidata
- Realizzato in questa fonte candidata.
- Produzione pubblica
- Questa versione della metrica non è stata verificata in modo indipendente nell'ambiente pubblico di produzione.
Legga lo stato prima di citare questo numero.
The daily calculation is implemented in this source candidate (worker rollup, migrations 0396 and 0407, method settled-reliability-patterns-daily-v2). Public production verification for this version is not yet recorded.
Esclusioni
OC Transpo O-Train lines are left out: the operator publishes no live train positions, so their arrivals repeat the timetable.
Comparing each pair with its own planned gap means an unseen bus in between, or a bus passing another, does not create a false bunch.
Incertezza e interpretazione
Arrival times are the last prediction made no earlier than 10 minutes before the scheduled time, not a recorded door opening.
Dati probanti attuali
Per questo indicatore non è disponibile alcun dettaglio registrato. La pagina pubblica resta la fonte di presentazione attuale.
Cronologia delle modifiche
Per questa versione della metrica non risulta alcuna modifica sostanziale registrata.