Ford 2002 Crown Victoria Manual page 128

Seating and Safety Restraints
Do not leave children, unreliable adults, or pets unattended in
your vehicle.
Child booster seats
Children outgrow a typical convertible or toddler seat when they weigh
40 pounds and are around 4 years of age. Although the lap/shoulder belt
will provide some protection, these children are still too small for
lap/shoulder belts to fit properly, which could increase the risk of serious
injury.
To improve the fit of both the lap and shoulder belt on children who
have outgrown child safety seats, Ford Motor Company recommends use
of a belt-positioning booster.
Booster seats position a child so that safety belts fit better. They lift the
child up so that the lap belt rests low across the hips and the knees
bend comfortably. Booster seats also make the shoulder belt fit better
and more comfortably for growing children.
When children should use booster seats
Children need to use booster seats from the time they outgrow the
toddler seat until they are big enough for the vehicle seat and
lap/shoulder belt to fit properly. Generally this is when they weigh about
80 lbs (about 8 to 12 years old).
Booster seats should be used until you can answer YES to ALL of these
questions:
Can the child sit all the way back
against the vehicle seat back with
knees bent comfortably at the
edge of the seat without
slouching?
Does the lap belt rest low across the hips?
Is the shoulder belt centered on the shoulder and chest?
Can the child stay seated like this for the whole trip?
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