Ford Windstar Owner's Manual page 242

The rear cross-bar can be adjusted forward and backward. Place
your luggage between the bars, adjust the rear bar, and secure
the luggage with rope to the bars. Items carried on the roof
rack must be properly secured before driving your vehicle.
The adjustable cross-bar
Driving Under Special Conditions
Tips for Safe Driving
As with any new vehicle, yours may drive and handle
differently from your previous vehicle. Use greater care until
you become accustomed to its features and driving
characteristics.
Always operate your vehicle within reasonable limits. Abrupt
changes in acceleration, deceleration, turning, or combinations of
these maneuvers can cause a vehicle to behave differently than
anticipated, especially when road conditions vary.
For example, even with anti-lock brakes, extreme braking can
make it difficult to control the direction of the vehicle. Use a
"squeeze" technique. Push on the brake pedal with steadily
increasing force. This allows the wheels to brake, yet continue to
roll so that you may steer in the direction you want to travel.
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