BARRIE, ONT. -- One person is in the hospital with life-threatening injuries after a collision in Caledon on Thursday between a car and a transport truck.

Provincial police say the car was travelling north along Horseshoe Road and turned onto Charleston Sideroad when the crash happened.

They say that a stop sign controls that intersection, and the transport truck had been travelling west on Charleston.

The truck driver was not injured.

The roads were closed for the investigation and cleanup for several hours. They have since reopened.

Police are investigating and ask any witnesses or anyone with dashcam or home video footage to contact them at 1-888-310-1122.