Oldsmobile 1998 Aurora Owner's Manual page 18

Reclining Front Seatbacks
The vertical control described previously in this section
reclines the front seatbacks.
But don't have a seatback reclined if your vehicle
is moving.
Sitting in a reclined position when your vehicle
is in motion can be dangerous. Even if you
buckle up,
your
safety belts can't do their job
when you're reclined like this.
The shoulder belt can't do its job because it
won't be against your body. Instead, it will be
in front of you. In
a
crash you could go into it,
receiving neck or other injuries.
The lap belt can't do its job either. In a crash
the belt could go up over your abdomen. The
belt forces would be there, not
at
your pelvic
bones. This could cause serious internal injuries.
For proper protection when the vehicle is in
motion, have the seatback upright. Then sit
well back in the seat and wear your safety
belt properly.
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