A man has been rushed to hospital with life-threatening injuries after he was struck by a vehicle at the westbound Highway 401 off-ramp at Keele Street.
Emergency crews responded to the area just before 7 a.m. on Thursday.
Paramedics say a man in his 30s was struck by the vehicle.
Police say the driver involved remained at the scene.
The eastbound and westbound collector lanes of the 401 are closed at Keele, as well as the eastbound and westbound ramps.