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• Just before impact, drivers often
brake heavily. Such heavy braking
lowers the front portion of the vehi-
cle causing it to "ride" under a vehi-
cle with a higher ground clearance.
Air bags may not inflate in this
"under-ride" situation because
deceleration forces that are detect-
ed by sensors may be significantly
reduced by such "under-ride" colli-
sions.
OGS035030
• Air bags do not inflate in rollover
accidents because vehicle can not
detect rollover accident.
OED036104
• Air bags may not inflate if the vehi-
cle collides with objects such as
utility poles or trees, where the
point of impact is concentrated and
the collision energy is absorbed by
the vehicle structure.
OGS038025L
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