Independent, citizen-led transit information for Ottawa–Gatineau riders. Not affiliated with OC Transpo or STO.
Route
81
OC Transpo
This page includes all 2 current versions of the route, including short trips and different destinations.
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Route check
How route 81 is doing
A plain-language summary of the strongest evidence we have. We say when the data cannot answer a question.
Bottom line
Service is unreliable often enough to affect riders.
72 in 100 arrivals were within 5 minutes of schedule · 67,110 arrivals checked
Confidence in this summary: High
Based on 67,110 arrivals over 22 weekdays, from 2026-07-29T18:45:47.010Z to 2026-08-28T18:45:47.010Z.
Updated Aug 28, 2026, 2:45 p.m.
Problems to fix
These are repeated patterns, not one bad day or an unverified rider report.
No recurring problem time has cleared our evidence threshold yet.
No current official notice matches this route.
Problem places
- DUMAURIER / RICHMOND
38 in 100 arrivals were more than 5 minutes early or late (405 arrivals over 19 days).
Open this stop - DUMAURIER / GRENON
37 in 100 arrivals were more than 5 minutes early or late (406 arrivals over 19 days).
Open this stop - DUMAURIER / ALENMEDE
37 in 100 arrivals were more than 5 minutes early or late (406 arrivals over 19 days).
Open this stop - DUMAURIER / AD. 3055
37 in 100 arrivals were more than 5 minutes early or late (405 arrivals over 19 days).
Open this stop
These are route-specific settled arrivals. They identify a repeated location and time difference, but do not prove the cause.
The questions riders ask
- Cancelled trips right now
- Cannot confirm right now
- Trips that may not have shown up
- No confirmed count yet
- Late service
- The slowest 5 in 100 were more than about 13.2 min late
- Long gaps or bunching
- No route-level result meets the evidence threshold yet. This does not mean gaps did not happen.
Checks trips starting at route endpoints in the next 4 hours. This is not a historical cancellation rate.
The schedule-to-position check is unavailable, so we do not guess.
72 in 100 arrivals were within 5 minutes of schedule.
How this route is judged: Regular all-stop route
We compare observed arrivals with the official schedule. A result needs at least 200 arrivals. Within 5 minutes is the rider-facing target used here.
What this data cannot prove
The public feed does not provide dependable passenger counts or passed-up-rider events. A missing position does not by itself prove a cancellation, no-show, short turn or cause.
See the definitions, thresholds and evidence order
- Official current feed: explicit cancellations, skipped stops and active notices.
- Matched observations: vehicle positions and settled predictions tied to the official schedule.
- Official timetable: what was planned, kept separate from what was observed.
- Rider and operator reports: leads about routes, times and places to investigate—not numeric proof by themselves.
Live route map
Where the buses are now
Fresh vehicle positions appear on the route below. A marker stops moving when the evidence runs out—we do not invent movement.
Route and live buses
The line is the official route. Dots show published stops, buses seen now and stops named in current notices.
0 official shapes · 172 stops · 0 vehicle markers
Loading official route geometry · Loading current vehicles
Markers move between GPS fixes using measured progress along the published route. They pause after one measured reporting interval, on a measured standstill, or when evidence becomes stale.
Repeated problem stops: NAVAHO / ALBANY, NAVAHO / SHERMAN, NAVAHO / IRIS, IRIS / WHITMORE, IRIS / FIELD and 7 more. These are highlighted from route-specific settled arrivals with at least 60 observations over 3 days; the pattern does not prove a cause.
Today’s schedule
Service date August 28, 2026
- Towards Tunney's Pasture
- 33 scheduled trips
- 5:31 a.m.–12:43 a.m. (next day)
- 30 min median scheduled gap
- Towards Bayshore
- 33 scheduled trips
- 6:09 a.m.–12:24 a.m. (next day)
- 30 min median scheduled gap
Span and median gap are computed from today’s official GTFS stop_times. They are timetable measures, not observed headways or a frequency guarantee.
Next trips from the ends of the route
These are trip starts. For the time at your stop, open that stop’s departure board.
Towards Bayshore
Starts at TUNNEY'S PASTURE D
Timetable only. No usable prediction is available for this trip.
Towards Tunney's Pasture
Starts at BAYSHORE A
Timetable only. No usable prediction is available for this trip.
Towards Bayshore
Starts at TUNNEY'S PASTURE D
Timetable only. No usable prediction is available for this trip.
Towards Tunney's Pasture
Starts at BAYSHORE A
Timetable only. No usable prediction is available for this trip.
Showing 4 of 12 trips. Open a stop for its full departure board.
The realtime prediction feed is unavailable or stale. Timetable times remain labelled as scheduled only.
Buses seen now
Current vehicle positions cannot be confirmed. No zero is shown.
Official notices
No matching active notice appears in the current healthy operator feed.
Planned changes
No safely matched planned change is recorded for this route.
These are Otranspo register records, separate from operator alerts. A record is attached only when its route label identifies one operator; ambiguous OC Transpo/STO number matches are withheld.
Evidence checked Aug 28, 6:57 p.m.
Check the numbers
Data behind this result
This route has more than one official schedule record. We keep each record separate so the totals stay checkable and we do not invent a combined worst-case result.
Open any result below to see the hours, denominators, observed days, and position coverage behind it.
Observed evidence cohort 81
Provisional results, published evidence
When is this route reliable?
Every hour below is backed by this route’s settled arrivals. “On time” means no more than five minutes early or late, so a bus that leaves very early counts as a failure for the waiting rider.
Evidence window: July 29, 2026 to August 28, 2026
- 72.2%
- Within ±5 min
- 67,110
- Settled arrivals
- 22
- Observed weekdays
- 13.2 min late
- How late the worst 5 in 100 were
Patterns by hour (0)
Not enough arrivals yet to split this route by hour.
No repeated pattern below 70% is yet established across at least three service days.
Scheduled bus, but not observed in realtime
Schedule-to-position comparison is not available for this route yet.
This is not a confirmed no-show. A missing position can mean a cancelled or missed bus, but it can also mean an unassigned trip ID or an operator-feed gap. Otranspo publishes the gap because it matters to riders while keeping the conclusion honest.
Method: last prediction within ten minutes of each arrival; one arrival per trip, stop and service date. Trip coverage: GTFS schedule compared with any GTFS-RT position carrying the same trip and local service date. Sources and limitations.
See all stops and route patterns
Stops and stations
6 official stop patterns
Each row below is one exact stop order published in the official schedule. Short turns and alternate destinations stay separate.
- View stops and calendar →
Towards Tunney's Pasture: BAYSHORE A to TUNNEY'S PASTURE E
83 stops · 375 imported trips
Scheduled from Aug 14, 2026 to Aug 29, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
11 official service records
6 added dates and 13 removed dates
- View stops and calendar →
Towards Tunney's Pasture: BAYSHORE A to TUNNEY'S PASTURE E
82 stops · 180 imported trips
Scheduled from Aug 30, 2026 to Sep 20, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
5 official service records
0 added dates and 1 removed date
- View stops and calendar →
Towards Tunney's Pasture: BAYSHORE A to TUNNEY'S PASTURE E
82 stops · 47 imported trips
Scheduled from Aug 14, 2026 to Aug 29, 2026
Published weekly days: Saturday, Sunday
2 official service records
0 added dates and 0 removed dates
- View stops and calendar →
Towards Tunney's Pasture: BAYSHORE A to TUNNEY'S PASTURE E
81 stops · 193 imported trips
Scheduled from Aug 30, 2026 to Sep 20, 2026
Published weekly days: Monday, Saturday, Sunday
7 official service records
4 added dates and 16 removed dates
- View stops and calendar →
Towards Bayshore: TUNNEY'S PASTURE D to BAYSHORE B
89 stops · 417 imported trips
Scheduled from Aug 14, 2026 to Aug 29, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
13 official service records
6 added dates and 13 removed dates
- View stops and calendar →
Towards Bayshore: TUNNEY'S PASTURE D to BAYSHORE B
88 stops · 367 imported trips
Scheduled from Aug 30, 2026 to Sep 20, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
12 official service records
4 added dates and 17 removed dates
Source checksum 93bdaf6ee5d5ca7fd25a8c81319668a8489f2d9c86433718618d79c61c38bba2
Evidence behind this pageOpen the definition, method, sources, dates, coverage, and known limits.
What is being shown
The current public route group, its published schedule variants and stop patterns, current operations, and matching observed reliability where available.
How it was produced
2 current GTFS route record variants are grouped by operator and public route number. Stop patterns remain tied to their published variant; aggregated reliability records are not merged into an invented percentile.
Evidence dates
- Computed or assembled
- Sample
- 67,110 settled arrivals across 1 matching reliability records.
- Coverage
- 6 published stop patterns containing 505 stop calls are available on this page.
- Method or data version
- last-prediction-within-ten-minutes-v1; 93bdaf6ee5d5ca7fd25a8c81319668a8489f2d9c86433718618d79c61c38bba2
Sources
Limits to keep in mind
- Schedule variants can apply on different dates. A grouped route is not a claim that every pattern operates today.
- Accessibility fields report only what the operator publishes; an unknown value is not confirmation of access.
Rider evidence
Community reports
Signals below are moderated community aggregates, not official operator notices or reliability scores.
You can report without signing in. Anonymous reports count a little less when we calculate public patterns. You can add an account after submitting.
Report a specific problem
Emergency: call 9-1-1. Check official OC Transpo or STO notices before travelling.
Source: currently imported OC Transpo GTFS. Check the Alerts panel for current official notices and each stop page for observed departures.