The share of back-to-back buses on a route that arrived much closer together than the timetable planned for those same two trips.
- 정의
- The share of back-to-back buses on a route that arrived much closer together than the timetable planned for those same two trips.
- 공식
- 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.
- 단위
- percent of judged pairs, with the count of pairs
- 대상 집단
- Pairs of buses on the same route and direction that arrived one after the other at the same stop, from settled final predictions.
- 측정 기간
- The 28 most recent completed service days, by calendar date in Ottawa.
- 범위
- 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.
- 게시 자격
- 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.
- 범위
- 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).
- 이 숫자로 알 수 있는 것
- A high share means buses often come together and then leave a longer wait behind them. It is not a count of late buses.
- 출처와 식별자
- 방법 · Daily reliability-pattern method
settled-reliability-patterns-daily-v2 - 현재 API · Bunching, slow segments and on-time by hour
reliability-patterns
- 방법 · Daily reliability-pattern method
구현 상태
- 출처 후보
- 이 소스 후보에 적용되었습니다.
- 공개 제작
- 이 지표 버전은 공개 운영 환경에서 독립적으로 검증되지 않았습니다.
이 숫자를 인용하기 전에 상태를 읽어 주세요.
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.
제외 항목
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.
불확실성과 해석
Arrival times are the last prediction made no earlier than 10 minutes before the scheduled time, not a recorded door opening.
현재 근거 자료
이 지표에 등록된 상세 기록이 없습니다. 공개 페이지가 계속 현재 표시 기준입니다.
변경 이력
이 지표 버전에는 등록된 중요한 변경 사항이 없습니다.