A Sedalia man has died as a result of a head-on collision in Pettis County, just after 8pm Saturday night. According to the Highway Patrol, A vehicle driven by 34 year old Elmer Knox of Sedalia was Eastbound on Route HH, East of Route EE, when it crossed the center line and struck Westbound 41 year old Brian R. Barr, also of Sedalia. Barr was transported to University Hospital in Columbia where he was pronounced dead. Knox, his wife and three children were all injured and taken by private vehicle to Bothwell Hospital.