O-Train Line 1 starts at noon on Sunday, November 15, for software updates
O-Train Line 1 will not run from 8 am to noon on Sunday, November 15. Replacement buses cover the full route while the City installs software needed for the East Extension.
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O-Train Line 1 will not run from 8 am to noon this Sunday, November 15. The City of Ottawa says R1 replacement buses will cover the full Tunney's Pasture to Blair corridor during that four-hour window, while crews install software updates needed for the Line 1 East Extension.
The City announced the change on November 12, 2026. Its release says: "This temporary service adjustment is required to safely implement software updates needed for the Line 1 East Extension."
What runs instead
R1 replacement buses cover the full stretch between Tunney's Pasture and Blair from 8 am to noon.
Two shuttle bus routes handle shorter sections of the line during the same window: one runs between St-Laurent and Cyrville stations, and a second runs between Lees Station and Mackenzie King Bridge.
OC Transpo staff will be stationed at key transit hubs to help riders find their bus connections during the closure.
Why the closure is needed
The City says these software updates are a step toward the next phase of East Extension testing. The East Extension is a planned expansion of Line 1 beyond Blair station, its current eastern end. The City's November 12 announcement describes the updates as "a key milestone in preparing for the next stage of East Extension testing," which will involve Pre-Trial and Trial Running phases.
What comes next
Full Line 1 service between Tunney's Pasture and Blair resumes at noon on November 15. The closure is a one-time event specific to that morning. The City has not announced a date for the East Extension to open for regular service.
If you ride O-Train Line 1 on Sunday morning before noon, check octranspo.com or call 613-560-5000 for bus stop locations and timing. The Travel Planner at plan.octranspo.com shows updated routes for November 15. After noon, all Line 1 stations return to normal O-Train service.
Questions this story answers
What time does O-Train Line 1 service resume on Sunday, November 15?
O-Train Line 1 resumes full service between Tunney's Pasture and Blair stations at noon on Sunday, November 15, 2026, according to the City of Ottawa's announcement published November 12, 2026. The closure runs from 8 am to noon only. Riders who need to travel before noon can use R1 replacement buses and shuttle buses, as described in the City's announcement.
Why is O-Train Line 1 not running Sunday morning on November 15?
The City of Ottawa says the morning closure is needed to safely install software updates for the Line 1 East Extension. The announcement describes these updates as a key step toward the next phase of East Extension testing.
What buses replace O-Train Line 1 on Sunday morning, November 15?
R1 replacement buses run between Tunney's Pasture and Blair stations from 8 am to noon. Shuttle buses also cover two shorter segments: St-Laurent to Cyrville stations, and Lees Station to Mackenzie King Bridge.
Which O-Train stations are affected by the November 15 disruption?
All stations on the Line 1 corridor between Tunney's Pasture and Blair are affected from 8 am to noon on November 15. The City specifically names St-Laurent, Cyrville, Lees Station, and Mackenzie King Bridge in its shuttle bus notice.
Is this related to the O-Train East Extension?
Yes. The City of Ottawa says these software updates are needed for the Line 1 East Extension and describe them as preparing for the next stage of East Extension testing, which will involve Pre-Trial and Trial Running phases.
Who can riders call for help during the November 15 O-Train disruption?
OC Transpo staff will be at key transit hubs during the morning closure. Riders can also call 613-560-5000, check octranspo.com, or use the Travel Planner at plan.octranspo.com for route and schedule information.
Does the November 15 disruption affect O-Train service after noon?
No. The City of Ottawa says full O-Train Line 1 service resumes between Tunney's Pasture and Blair stations at noon on Sunday, November 15. The closure covers only the 8 am to noon window. Riders travelling after noon on November 15 do not need replacement buses and can board trains as usual at all Line 1 stations between Tunney's Pasture and Blair.
What is the Line 1 East Extension?
The O-Train East Extension is a planned expansion of Line 1 beyond Blair station. The City has been running testing phases and the November 15 software update is described as a step toward the Pre-Trial and Trial Running phases of that testing process.
Sources
The pages this story draws on. Open one to check a claim yourself.
- City of Ottawa announcement, November 12, 2026ottawa.ca
- OC Transpo travel plannerplan.octranspo.com
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