Independent, citizen-led transit information for Ottawa–Gatineau riders. Not affiliated with OC Transpo or STO.
Route 451
Trip service evidence
Open the totals. See the day, scheduled trip, public feed vehicle ID, and the data gaps that were excluded.
Normal on-time ranking is not published for this service family. Trip visibility remains available, but the purpose-aware grading rule still applies.
Operator-confirmed cancellations retained for this period
These rows exist only when an operator feed explicitly published CANCELED or DELETED. Collection starts with this feature’s release, so an empty earlier day means “not retained,” not zero cancellations.
No explicit cancellation statement has been retained for this period. This does not prove that every trip operated.
No scheduled bus trips were found for this route and window.
Scheduled-trip detail
Choose a date in the table to see every scheduled trip. Until then, the list focuses on cases that need investigation.
| Trip | Scheduled service | What the public evidence says | Vehicle ID(s) published by the feed | First / last observed | Feed evidence during this trip |
|---|
What these labels mean
- observed
- At least one public feed vehicle ID was credibly tied to the scheduled trip on that service date.
- noPositionCandidate
- No public vehicle position matched the scheduled trip, and that trip’s own scheduled window had at least 75% of the expected operator-feed snapshots with observations near both ends. This needs investigation and is not proof of cancellation.
- evidenceGap
- No matching position was found, but that trip’s scheduled window lacked enough operator-specific archive coverage. It is excluded from missing-service counts.
- vehicleId
- An identifier published by the realtime feed. It may change and is not necessarily a verified physical fleet number.
- cancellation
- Historical cancellation is published only when a retained operator trip update explicitly marks it cancelled or deleted. Position absence alone is never relabelled as cancellation.