FORD 2009 Explorer Sport Trac v.1 - Manual (Page 219)

Example only:
Cargo Weight – includes all weight added to the Base Curb Weight,
including cargo and optional equipment. When towing, trailer tongue load
or king pin weight is also part of cargo weight.
GAW (Gross Axle Weight) – is the total weight placed on each axle
(front and rear) – including vehicle curb weight and all payload.
2009 07+ Explorer Sport Trac (esp)
Owners Guide, 1st Printing
USA (fus)
Tires, Wheels and Loading
219