Before
Service date checked: August 31, 2026
- Scheduled trips
- 184
- Distinct scheduled stops
- 5
- Distinct published paths
- 4
- Published service span
- 06:07–24:23
Feed fingerprint: ecc28a3727bcaff4 · 345fd07d-fb05-4eaa-8ec2-3daf8b7fcbe9
Otranspo
Independent, citizen-led transit information for Ottawa–Gatineau riders. Not affiliated with OC Transpo or STO.
Route
4
OC Transpo
South Keys ↔ Airport ~ Aéroport
All imported trips are marked accessible.Imported schedule valid through: Oct 4, 2026
Route check
How route 4 is doing
A plain-language summary of the strongest evidence we have. We say when the data cannot answer a question.
Bottom line
Public data cannot grade this train line live. Check official alerts and dated observations below.
Available evidence: the official timetable, official service alerts, train research, and dated rider observations. None is presented as a live train position.
What riders want to know
- Is this train line down now?
- No official notice matches this line right now
- Did every scheduled train run?
- Cannot be confirmed from the public feed
- How late are trains?
- Cannot be confirmed from the public feed
- Are there long gaps between trains?
- Cannot be confirmed from the public feed
No matched notice is not proof that every train is running. Check the official alerts and dated observations below.
OC Transpo does not publish live O-Train positions or arrival predictions in the public feed Otranspo receives, so we do not turn missing positions into no-shows, delays, or gaps.
OC Transpo does not publish live O-Train positions or arrival predictions in the public feed Otranspo receives, so we do not turn missing positions into no-shows, delays, or gaps.
OC Transpo does not publish live O-Train positions or arrival predictions in the public feed Otranspo receives, so we do not turn missing positions into no-shows, delays, or gaps.
Schedule change check
Fall schedule: before and after
This compares the official schedule that ended with the one that started August 30. Schedule changes are facts about what was planned; they do not prove that a trip ran.
Current published schedule began September 4, 2026
What the official notice says about this route
The City’s public summary did not name this route. The feed comparison below can still show a changed timetable, but it cannot tell us why it changed.
Read the official August 30 service-change notice →One comparable weekday from each published schedule
We use the first Monday after the new schedule began and the Monday one week earlier. Every figure comes from the retained official GTFS versions named below.
New schedule
Service date checked: September 7, 2026
- Scheduled trips
- 81
- Distinct scheduled stops
- 5
- Distinct published paths
- 3
- Published service span
- 07:36–23:55
Feed fingerprint: e0b417f2ea03fcf0 · 37ff8dfc-21cc-48c3-9eba-fc0d2e50b2ad
Did service improve after the change?
We will compare settled arrivals for the 14 days before and after the change. We publish the comparison only after both sides have at least 7 service days and 200 arrivals.
The public feed has no live O-Train positions or predictions. The schedule comparison is visible, but a train reliability before-and-after score cannot be produced from missing realtime rail data.
Checksums let anyone verify which retained timetable produced the counts. A changed count does not identify a cause, cancellation, operator decision, or passenger impact.
How this train line is judged
No live grade is published. Official alerts, the timetable, research, and dated observations stay separate and auditable until OC Transpo publishes dependable realtime rail data.
What this data cannot prove
The public feed does not provide live train positions, arrival predictions, dependable passenger counts, or proof that a scheduled train ran. A timetable entry is not a live observation.
See the definitions, thresholds and evidence order
- Official current alerts: the strongest public evidence of a disruption or outage.
- Official timetable: what was planned, never shown as a live train position.
- Moderated dated observations: evidence about a specific time and place, not a complete train count.
- Research and historical records: context to investigate patterns, not proof of today’s operation.
O-Train evidence
What we know about train service here
Trains are not in the public data feed
OC Transpo publishes live positions for its buses, and this site measures them: millions of bus arrivals every month, which is where every bus figure on this site comes from. The same public feed carries no train positions, so this site has never recorded a single train arrival. Nothing here can tell you where a train is, or whether Lines 1, 2 and 4 run on time.
This is a gap in what is published, not a gap in the trains. If train positions were published the way bus positions already are, riders would get the same record for rail that they have for every bus route on this site.
Recent shared train observations
These are rider sightings approved by a moderator. They show a reported time and place. They are not official train positions, a complete train count, or proof of a cause.
No approved rider observation matches this place or line in the last 31 days. That does not mean no train ran or no problem occurred.
Would you count on route 4?
No sign-in needed. A vote from a device that is not signed in counts a little less than one from an account, and a person who rates many routes counts a little less on each, so no one voice outweighs the rest.
Share this page
Use the permanent public link to this page and its sources.
Only the canonical public link is shared. Panel state, location, receipts, and other browser-only details are left out. Email and social services apply their own privacy terms.
O-Train line map
Train service on this line
The official line, stations, timetable and current service evidence are shown together. OC Transpo does not publish live train positions or arrival predictions in the public feed Otranspo receives.
Official line and stations
The line and station dots come from the official timetable. Otranspo does not turn the timetable into a claimed live train position.
0 official shapes · 5 stations and platforms
Loading official route geometry · Live train positions are not published in the public OC Transpo feed. Open Explore for clearly labelled timetable estimates, or share a moderated train observation.
Official alerts and moderated rider observations are shown separately above. A rider sighting is evidence about its time and place, not a complete train tracker.
Today’s schedule
Service date September 8, 2026
- Towards South Keys
- 92 scheduled trips
- 6:07 a.m.–12:23 a.m. (next day)
- 12 min median scheduled gap
- Towards Airport ~ Aéroport
- 92 scheduled trips
- 6:08 a.m.–12:20 a.m. (next day)
- 12 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.
No upcoming trip start is published in the next four hours.
Live train positions
Live train positions are not published in the public OC Transpo feed. Open Explore for clearly labelled timetable estimates, or share a moderated train observation.
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 Sep 8, 1:55 a.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.
No reliability cohort can be safely matched to this public route. No representative schedule record is substituted.
See all stops and route patterns
Stops and stations
4 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 South Keys: AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD to SOUTH KEYS O-TRAIN NORTH / NORD
3 stops · 175 imported trips
Scheduled from Sep 4, 2026 to Oct 4, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
3 official service records
1 added date and 1 removed date
- View stops and calendar →
Towards South Keys: UPLANDS O-TRAIN NORTH / NORD to SOUTH KEYS O-TRAIN NORTH / NORD
2 stops · 3 imported trips
Scheduled from Sep 4, 2026 to Oct 4, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
3 official service records
1 added date and 1 removed date
- View stops and calendar →
Towards Airport ~ Aéroport: SOUTH KEYS O-TRAIN SOUTH / SUD to AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD
3 stops · 175 imported trips
Scheduled from Sep 4, 2026 to Oct 4, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
3 official service records
1 added date and 1 removed date
- View stops and calendar →
Towards Airport ~ Aéroport: UPLANDS O-TRAIN SOUTH / SUD to AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD
2 stops · 1 imported trip
Scheduled from Sep 4, 2026 to Oct 4, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
1 official service record
0 added dates and 1 removed date
Official feed version 37ff8dfc-21cc-48c3-9eba-fc0d2e50b2ad
Source checksum e0b417f2ea03fcf035ed795c07b47461157b81b0c43d43639094105ed66b0a4a
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
1 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
- Collected or observed
- Sample
- No matching settled-arrival reliability sample is currently published for this public route.
- Coverage
- 4 published stop patterns containing 10 stop calls are available on this page.
- Method or data version
- last-prediction-within-ten-minutes-v1; 37ff8dfc-21cc-48c3-9eba-fc0d2e50b2ad; e0b417f2ea03fcf035ed795c07b47461157b81b0c43d43639094105ed66b0a4a
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.