Preliminary investigation revealed that a westbound courier truck collided with the rear of a tractor trailer. The driver was. transported by Ornge air ambulance to a trauma centre in Hamilton with serious injuries.
The second driver was transported to a local hospital with non-life threatening injuries.
OPP Technical Collision Investigators are on the scene and Highway 7 remains closed between Wellington Road 32 and Shantz Station Road while officers continue to investigate.
The cause of the collision is currently under investigation and Wellington County OPP is asking anyone who may have witnessed this collision or has dash cam video equipped in their vehicle to please call 1-888-310-1122.