Ford 1998 Windstar Owner's Manual page 220

It is extremely dangerous to ride in a cargo area, inside
or outside of a vehicle. In a collision, people riding in
these areas are more likely to be seriously injured or
killed. Do not allow people to ride in any area of your
vehicle that is not equipped with seats and safety belts.
Be sure everyone in your vehicle is in a seat and using a
safety belt properly.
Understanding Loading Information
There are five terms that are used to describe a vehicle's ability
to carry a load:
Base Curb Weight
Payload
GVW (Gross Vehicle Weight)
GVWR (Gross Vehicle Weight Rating)
GAWR (Gross Axle Weight Rating)
GCWR (Gross Combined Weight Rating)
Base Curb Weight
The base curb weight is the weight of the vehicle including fuel,
coolants, lubricants, emergency tools and spare wheel and tire.
It also includes any equipment that is standard. It does not
include passengers, cargo or optional equipment installed by
factory, dealer, aftermarket supplier or customer.
Payload
Maximum payload is the combined, maximum allowable weight
of cargo, occupants and optional equipment that the vehicle is
designed to carry. It is the Gross Vehicle Weight Rating minus
the base curb weight.
RWARNING
Driving
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