A significant multi-vehicle collision has forced the closure of multiple northbound lanes on Highway 400 at the Highway 401 interchange Friday morning, creating major disruptions for Greater Toronto Area commuters.
Traffic Chaos During Morning Rush
The incident occurred during the critical morning rush hour period, creating extensive backups along one of Ontario's busiest transportation corridors. Ontario Provincial Police confirmed the lane closures began around 8:20 AM EST on November 28, 2025, though the exact timing of the initial collision remains under investigation.
Emergency responders including paramedics, fire crews, and multiple OPP units were dispatched to the scene to manage the situation and provide assistance to those involved in the crash. The severity of injuries, if any, has not been officially disclosed by authorities at this time.
Commuters Face Extensive Delays
The lane closures have created a domino effect across the regional transportation network. Northbound Highway 400 traffic is being forced to merge into fewer available lanes, causing congestion that extends several kilometers back from the collision site.
Transportation officials are advising motorists to avoid the area entirely if possible and consider alternative routes including Highway 427, local arterial roads, or public transportation options. The typical travel time through this corridor has increased substantially, with some commuters reporting delays exceeding one hour.
Ongoing Investigation and Cleanup
OPP collision reconstruction teams have been called to the scene to determine the exact cause of the multi-vehicle incident. The investigation will examine factors including weather conditions, vehicle speeds, and driver actions leading up to the collision.
Cleanup crews are working to remove damaged vehicles and debris from the roadway, though officials have not provided a specific timeline for when all lanes might reopen. The complexity of the crash investigation often means extended closure periods to ensure thorough evidence collection.
This incident marks another challenging morning for Toronto-area drivers, highlighting the vulnerability of the region's transportation infrastructure during peak travel times. Commuters are encouraged to monitor real-time traffic updates through official OPP social media channels and transportation department websites for the latest information on lane reopenings.
