The collision occurred at Guelph Line and the 10th Sideroad on Wednesday afternoon.
A Halton EMS spokesperson told CBC News that one patient was to be transported to hospital with life-threatening injuries. There was no immediate information available on the age or gender of the injured person.
Halton Regional Police say that Guelph Line is currently closed from the 10th Sideroad to the 15th Sideroad. .