Five people were injured in a traffic collision, in Eastern Clarion County.  And, State Police say three of them were taken to Clarion Hospital for treatment.  Matthew Preston of the Shippenville area was driving a car on Piney Creek Road, in Limestone Township.  His vehicle pulled out onto Route 66 and into the path of an oncoming vehicle, operated by Jason Little of Hawthorn.  The Little car then hit the Preston car.  Both drivers were injured, as well as Preston's passanger, Timothy Ferringer of the Strattanville area and Little's passengers, Heather Davis of Hawthorn and Nicholas Polka of Distant.  Troopers list Little, Ferringer and Davis as having been taken to the hospital.