An 86-year-old man and his wife were killed in a collision with an 18-wheeler Tuesday afternoon in Lincoln County. The accident occurred on Highway 231/431 near Park City as Carl Bauer was attempting to pull out from a parking lot. He and his wife's car were struck by a semi that was traveling southbound on the roadway. Bauer and his wife Frances, 80, were killed in the crash. The driver of the 18-wheeler was not injured.No charges have been filed.