A 25 year old Woodbridge man has died in a single-vehicle rollover on the SB 427 Friday morning.
OPP say the victim wasn't wearing a seatbelt and was thrown from the car onto the highway.
Officers are looking into the possibility he was hit by more than one other vehicle after the initial crash.
The highway was closed between Finch and Derry Road until about 7 a.m.
Police say they also laid a careless driving charge against a woman that drove through the barricade.
She told police she was late for a flight at Pearson Airport.