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Knowing your vehicle
• Just before impact, drivers often brake
heavily. Such heavy braking lowers the
front portion of the vehicle causing it to
“ride” under a vehicle with a higher
ground clearance. Air bags may not
inflate in this "under-ride" situation
because deceleration forces that are
detected by sensors may be signifi-
cantly altered by such “under-ride” col-
lisions.
• Air bags may not inflate in rollover acci-
dents. Air bag deployment would not
provide proper protection to the occu-
pants.
However, curtain air bags may inflate
when the vehicle is rolled over by a
side impact collision.
• Air bags may not inflate if the vehicle
collides with objects such as utility
poles or trees, where the point of
impact is concentrated to one area and
the full force of the impact is not deliv-
ered to the sensors.
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