Brant County OPP say the woman who died in a single-vehicle collision on Tuesday was 56-year-old Nelly Bennett of Oxford County.
The crash happened around 6:30 a.m. on the eastbound Highway 403, east of Garden Avenue.
Investigators say after the driver tried to change lanes a Volkswagen went out of control, entered the south ditch and rolled several times ejecting the driver.
Bennett was pronounced dead at the scene by the attending Coroner.
An investigation into the crash continues and OPP Technical Traffic Collision Investigators are assisting.