Police have charged the driver of a transport truck in a fatal crash on the 400 at the beginning of March.
The crash happened on March 5th, on the southbound side of the 400, south of Innisfil Beach Road.
Police say, at around 11:30 on that day, the driver of a tractor trailer lost control of the vehicle, while traffic was slowing.
The tractor trailer rear ended a cube truck forcing that truck through the centre steel guardrail, crossing into the northbound lanes.
That's where it collided with a Honda Civic and a Dodge Caravan.
The 51 year old woman behind the wheel of the Caravan, Karron Derbyshire from Barrie, was taken to hospital, where she later succumbed to her injuries.
The driver of the tractor trailer, 45 year old Jeffrey Gerald Quigley from Severn Township, has been charged with Criminal Negligence Causing Death.