Front seatbelts on 2002 Ford F-150 become unlatched unexpectedly while driving. This has been noticed over the last two or three years occasionally, but has been getting worse. Seat belt has become unlatched about 5-6 times during a 600 mile road trip. Seat belt was confirmed by two passengers that it was indeed latched correctly and nothing pushing the release button. Seatbelt was confirmed to be latched by firmly tugging on seat belt to witness that it was latched. Both passengers confirmed that the seatbelt become unlatched randomly while driving. Passenger and driver safety is at risk. If driver seatbelt comes unlatched while driving or during accident, the driver could loose control of truck and put other drivers at risk. The unlatching does not show any warning signs as to when it will become unlatched. Seatbelt just becomes unlatched and starts to recoil without warning. Ford service just says that the truck is out of warranty and that they dont cover seat belt replacements as there is no open recalls for such. Seatbelt is still currently installed on vehicle but can be available for inspection on vehicle or removed for inspection.