A Livingston man was killed overnight after his truck ran off the road. DPS troopers say 23 year old Ralph Ferrel was headed northbound on FM 3126 in Polk County. Ferrel left the road and struck a tree. At this time troopers aren't sure what caused him to leave the roadway. He was pronounced dead on the scene. Troopers said the victim was not wearing his seatbelt at the time of the accident.