Two Men Killed in Fatal Hwy. 400 Crash Near Major Mackenzie
Fatal Hwy. 400 Crash Kills 2, Northbound Lanes Closed

A devastating two-vehicle collision on Highway 400 has resulted in the deaths of two men and caused significant traffic disruptions north of Toronto.

Details of the Fatal Incident

The fatal crash occurred on Sunday, December 7, 2025, in the northbound lanes of Highway 400 at the Major Mackenzie Drive overpass in the City of Vaughan. Ontario Provincial Police (OPP) officials confirmed that the collision involved two vehicles and was declared fatal at the scene.

Emergency crews responded to the incident, which was reported early in the morning. The OPP's investigation into the precise cause of the crash is ongoing. Authorities have not released the identities of the two male victims pending notification of their families.

Major Traffic Disruption and Closure

In response to the serious collision, police and transportation officials made the decision to close all northbound lanes of Highway 400 at the scene. The closure was expected to remain in effect until approximately noon on Sunday, creating major delays for motorists traveling north from the Greater Toronto Area.

Commuters and travelers were urged to seek alternate routes while emergency personnel worked at the scene and investigators gathered evidence. The closure impacted one of Ontario's busiest transportation corridors, especially on a weekend during the holiday season.

Ongoing Investigation and Community Impact

The OPP's Technical Collision Investigation team was likely deployed to the scene to reconstruct the events leading to the tragedy. Such investigations typically involve examining vehicle positions, road conditions, and other contributing factors.

This fatal crash marks another tragic incident on Ontario's 400-series highways, which see a high volume of traffic year-round. It serves as a somber reminder for drivers to exercise caution, especially during winter driving conditions which can prevail in early December.

Local officials and first responders often emphasize the importance of road safety following such events. The investigation will aim to provide answers to the victims' families and determine if any charges will be laid.