Initial reports suggest that the vehicles collided with each other before one struck the pedestrian, police said.
Peel Paramedics tell Global News that the pedestrian, a female youth, was transported to SickKids Hospital in critical condition.
Both drivers remained at the scene, police said.
There is no word on any potential charges at this time. Britannia Road is closed eastbound at Joymar Drive while police investigate.
- High behind the wheel: Survey shows ‘alarming trends’ in cannabis-impaired driving
- Ontario Science Centre’s wish list for new site includes planetarium, rainforest
- Chiefs of Ontario asks for judicial review of carbon price regime
- Ontario to do away with mandatory coroner’s inquests on construction site deaths