A 40-year-old Thames Centre resident suffered life-threatening injuries following a single-vehicle collision involving a farm tractor in Perth South on Wednesday night. Emergency crews responded to the crash on Perth Road 151 at about 9:30 p.m. Police said the collision involved a farm tractor that was pulling a trailer. The injured driver was transported to hospital with injuries described as life-threatening. The Stratford Police Service Traffic Unit was called in to investigate and reconstruct the collision. Officers remained at the scene Wednesday night. Perth Road 151 is expected to remain closed for several hours between Line 2 and Whalen Line as the investigation continues. Police have not released further details about the circumstances surrounding the crash.