A traffic fatality at the intersection of Gandy Blvd. and Frontage Road shut busy Gandy Blvd. down for hours late Friday afternoon while police and firefighters tried to extricate the drivers and pasengers of the vehicles involved.  Two others involved in the crash were taken to Bayfront Medical Center.  The accident occurred at 3pm when one of the vehicles t-boned the other vehicle.  The cause of the crash has yet to be determined.  Factors such as speed, red light infractions, or alcohol are still not known at this time.  The person killed in the accident was in the passenger seat and took the full brunt of the collision.  It is not known if the t-boned vehicle had a passenger side airbag.