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Airbag Non-deployment
Impacts below a pre-determined threshold level may not cause the
airbag’s to deploy in the following cases:
•
Collision with Utility Poles or Trees -
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
delivered to the sensors.
•
Under-ride Situations -
Running under a truck's tail gate may not provide the
decelerations necessary for airbag deployment. 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 where deceleration forces that are
detected by sensors may be significantly reduced by such
“under-ride” collisions.
Rear-end Collisions -
Frontal air bags are not designed to inflate in rear collisions,
where occupants are moved backward away from the airbags by
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) (if equipped)