TULSA, Ok. - Over twenty trucks from the Oklahoma Department of Transportation were out overnight in Tulsa County spreading material on ice-glazed roadways. Even though motorists are advised to stay back and away from those trucks, ODOT's Martin Stewart says it doesn't always happen that way. Stewart says, "A couple of teenagers failed to yield at a stop sign, pulled out in front of one of my trucks, contact was made. One was transported but I've heard that is not injured." Stewart says if you don't have to be out just stay at home.