The difference between waiting time implied by settled predicted arrival spacing and waiting time implied by scheduled spacing for eligible high-frequency route–stop hours.
- 定義
- The difference between waiting time implied by settled predicted arrival spacing and waiting time implied by scheduled spacing for eligible high-frequency route–stop hours.
- 公式
- Predicted EWT − scheduled EWT, where each EWT = Σ(gap²) ÷ (2 × Σ(gap)). Gaps are ordered independently for scheduled and predicted arrivals before aggregation.
- 單位
- seconds, displayed in minutes
- 對象群體
- Eligible high-frequency bus route–stop hours with ordered scheduled and settled predicted arrivals.
- 測量期間
- Eligible completed service days in the latest 30 days.
- 涵蓋範圍
- Only service days that pass prediction-matching quality are included; every result retains its matched-arrival and stop counts.
- 發布資格
- At least five matched arrivals in a route–stop hour and an average scheduled headway from two through twelve minutes.
- 範圍
- Completed service days in the latest 30 days that satisfy the prediction-matching quality threshold; route–stop hours require at least five matched arrivals and an average scheduled headway from two through twelve minutes.
- 這個數字可以說明什麼
- Difference in wait implied by predicted spacing versus scheduled spacing. It is not observed passenger wait, actual door-opening regularity, or a low-frequency punctuality measure.
- 來源與識別碼
- 方法 · Settled predicted excess-wait method
settled-predicted-excess-wait-v1 - 目前 API · Current network reliability public API
reliability-evidence
- 方法 · Settled predicted excess-wait method
實施狀態
- 候選來源
- 已在此來源候選版本中實施。
- 公開製作
- 此指標版本尚未在公開的正式環境中經過獨立驗證。
引用此數字前，請先閱讀狀態說明。
The calculation is implemented in this source candidate. This record does not claim that the same version has been independently verified in the public production deployment.
排除項目
This is not an observed passenger-wait survey, and it does not include low-frequency route–stop hours or rail without supported realtime observations.
A negative result is not labelled better service; it only means the predicted spacing implied less wait than the imported timetable for the eligible population.
不確定性與解讀
Predicted arrivals are the last supported predictions near scheduled time, not recorded door-open events. Feed and matching quality therefore remain attached to the result.
目前數據
變更紀錄
此指標版本沒有已登記的重大變更紀錄。