Highway 400 SB Reopens After Multi-Vehicle Crash Near Sheppard Avenue
Hwy 400 SB reopens after multi-vehicle crash: OPP

Major Highway Reopens After Morning Collision

Highway 400 southbound has resumed normal operations after a multi-vehicle crash near Sheppard Avenue caused significant disruptions during the Thursday morning commute. The incident, which occurred in the early hours of November 20, 2025, forced authorities to reduce the busy highway to just one lane for several hours.

The Ontario Provincial Police responded to the collision around 6:54 AM EST, though the exact number of vehicles involved and potential injuries remain undisclosed. Emergency services worked diligently to clear the scene and assist those affected by the crash.

Traffic Impact and Commuter Delays

The lane reduction created substantial backups along one of Toronto's key transportation corridors during peak morning travel times. Commuters faced extended delays as traffic backed up for kilometers, with many drivers seeking alternative routes to avoid the congestion.

The OPP confirmed that all lanes have since been reopened, but residual delays persisted as traffic volumes normalized. Motorists were advised to exercise caution when passing through the affected area and to allow extra travel time throughout the morning.

Ongoing Investigation and Safety Reminders

Police continue to investigate the circumstances surrounding the multi-vehicle collision. While foggy conditions were reported in parts of Ontario on Thursday morning, authorities have not yet confirmed whether weather played a role in this particular incident.

This crash marks the second significant highway incident investigated by OPP in recent days, following another case where a 17-year-old was charged with impaired driving after a single-vehicle collision. The incidents highlight ongoing concerns about road safety during the changing fall weather conditions.

OPP officials remind drivers to maintain safe following distances, reduce speed during adverse weather conditions, and remain alert for sudden traffic changes, especially during early morning hours when visibility can be challenging.