CALGARY -- Two people were injured in a three vehicle collision in southern Alberta Monday. The incident took place around 12:15 p.m. on Highway 3, around three kilometres west of Fort Macleod. The collision involved a four door sedan, an SUV and a pickup truck pulling a tractor trailer. A man driving the sedan suffered serious injuries and was transported to an area hospital by STARS Air Ambulance. A second man, who was driving the SUV, was escorted to hospital by EMS with minor injuries. A man and woman who were in the pickup truck weren't injured. Traffic in the area was disrupted for several hours, but the scene was cleared about 9 p.m.