(Central Point, OR)  --  A traffic stop led to a large drug bust in Southern Oregon.  A state trooper pulled over a car on I-5 North of Medford for a traffic violation Friday afternoon.  During a search of the car, the trooper found two hidden compartments in the floor of the car.  Troopers seized seven pounds of cocaine and three grams of heroin.  The driver, 50-year-old Marisol Cervantes of Vancouver, was arrested on drug charges.