TL*THE CONTACT OWNS A 2009 CHEVROLET TRAVERSE. THE CONTACT APPLIED THE BRAKES WHILE DRIVING 35 MPH AND THE VEHICLE CRASH INTO THE REAR END OF THE VEHICLE IN FRONT. THE AIR BAG DID NOT DEPLOY. THE CONTACT SUFFERED A FRACTURED STERNUM BY HITTING THE STEERING WHEEL. THE CONTACT STATED THAT THE SEAT BELT DID NOT LOCK DURING THE CRASH. THE CONTACT WAS TAKEN TO THE HOSPITAL. THE MANUFACTURER STATED THAT THEY WILL PERFORM AN INVESTIGATION REGARDING THE SEAT BELT. THE FAILURE MILEAGE WAS 30,000.