Springfield State Street / Boston Road Corridor · Full Day · INBOUND
Pioneer Valley Transit Authority (PVTA) · 2026-09-12 · 07:00–19:00 · control point Big Y - Wilbraham
Scheduled trips
34
Observed passages
31
Observation coverage
91.2%
Research status
RESEARCH-GRADE OBSERVED ANALYSIS
Scheduled service versus observed operations
| Consecutive headway (min) | Scheduled Service — Static GTFS | Observed Operations — GTFS-Realtime |
|---|---|---|
| Intervals | 33 | 30 |
| Mean | 21.67 | 22.64 |
| Median | 20.00 | 20.88 |
| Minimum | 15.00 | 6.50 |
| Maximum | 45.00 | 60.15 |
| SD | 7.65 | 10.06 |
| CV | 0.353 | 0.444 |
Observed intervals are measured between consecutive confirmed passages at the approved control point. 6 passages were directly observed and 25 were reconstructed from bracketing vehicle positions, so individual interval values carry a passage-timing uncertainty of roughly one minute. Unresolved scheduled trips are never counted as missed service.
Observed control-point passages
| Route | Scheduled | Observed | Observed headway | Scheduled headway | Method |
|---|---|---|---|---|---|
| B7 | 07:00 | 07:02 | — | — | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 07:55 | 08:02 | 60.15 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 08:40 | 08:43 | 40.98 | 40.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 09:10 | 09:10 | 27.73 | 45.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 09:35 | 09:37 | 26.73 | 30.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 09:50 | 09:53 | 15.72 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 10:15 | 10:16 | 22.98 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 10:30 | 10:28 | 12.58 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 11:05 | 11:06 | 38.07 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 11:20 | 11:22 | 15.97 | 35.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 11:45 | 11:44 | 21.62 | 15.00 | DIRECT OBSERVATION |
| B7 | 12:00 | 12:06 | 21.47 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 12:25 | 12:26 | 20.33 | 15.00 | DIRECT OBSERVATION |
| B7 | 12:40 | 12:41 | 15.07 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 13:05 | 13:05 | 24.48 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 13:20 | 13:30 | 24.15 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 13:45 | 13:48 | 18.78 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 14:00 | 14:09 | 20.27 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 14:25 | 14:27 | 18.13 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 14:40 | 14:42 | 15.77 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 15:05 | 15:07 | 24.02 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 15:20 | 15:25 | 18.92 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 15:45 | 15:47 | 21.43 | 15.00 | DIRECT OBSERVATION |
| B7 | 16:00 | 16:13 | 26.58 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 16:25 | 16:20 | 6.50 | 15.00 | DIRECT OBSERVATION |
| B7 | 16:40 | 16:36 | 16.38 | 25.00 | DIRECT OBSERVATION |
| B7 | 17:05 | 17:06 | 29.47 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 17:20 | 17:23 | 16.73 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 17:45 | 17:54 | 31.28 | 15.00 | DIRECT OBSERVATION |
| B7 | 18:00 | 18:06 | 12.63 | 25.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
| B7 | 18:20 | 18:21 | 14.27 | 15.00 | INTERPOLATED — TERMINAL TRIP HANDOVER |
31 of the 34 scheduled trips at this control point were confirmed. 3 scheduled trips could not be resolved because no qualifying realtime position records were available. These unresolved trips represent data-coverage limitations and must not be interpreted as missed service without additional AVL, GTFS Trip Updates, dispatch, or vehicle-log evidence.
Observed Operations — GTFS-Realtime Vehicle Positions · engine observed-headway-1.1 · Observed coverage: 91.2%. Results are suitable for preliminary operational analysis but not for definitive missed-trip reporting.
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