The share of back-to-back buses on a route that arrived much closer together than the timetable planned for those same two trips.
- 定義
- The share of back-to-back buses on a route that arrived much closer together than the timetable planned for those same two trips.
- 計算式
- 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.
- 単位
- percent of judged pairs, with the count of pairs
- 対象
- Pairs of buses on the same route and direction that arrived one after the other at the same stop, from settled final predictions.
- 測定期間
- The 28 most recent completed service days, by calendar date in Ottawa.
- 対象範囲
- 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.
- 公開の適格性
- 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.
- 対象範囲
- 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).
- この数字からわかること
- A high share means buses often come together and then leave a longer wait behind them. It is not a count of late buses.
- 情報源と識別子
- 方法 · Daily reliability-pattern method
settled-reliability-patterns-daily-v2 - 現在のAPI · Bunching, slow segments and on-time by hour
reliability-patterns
- 方法 · Daily reliability-pattern method
実装の状況
- ソース候補
- このソース候補で実装済みです。
- 公開済みの作成物
- この指標のバージョンは、公開された本番環境では独立した検証を受けていません。
この数字を引用する前に、状況をお読みください。
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.
除外
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.
不確実性と解釈
Arrival times are the last prediction made no earlier than 10 minutes before the scheduled time, not a recorded door opening.
現在のデータ根拠
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変更履歴
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