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When should an air bag inflate?
An air bag is designed to inflate in a moderate to severe
-
frontal or near
frontal crash. The air bag will inflate only if
the impact speed is above the system's designed "threshold
level." If your vehicle goes straight into a wall that doesn't
move or deform, the threshold level is about 8 to 11 mph
(13 to 18 km/h). The threshold level can vary, however,
with specific vehicle design, so that it can be somewhat
above or below this range. If your vehicle strikes
something that will move or deform, such as a parked car,
the threshold level will be higher. The air bag is not
designed to inflate in rollovers, side impacts or rear
impacts, because inflation would not help the occupant.
In any particular crash, no one can say whether an air
bag should have inflated simply because of the damage
to a vehicle or because of what the repair costs were.
Inflation is determined by the angle of the impact and
how quickly the vehicle slows down in frontal or
-
near
frontal impacts.
What makes an air bag inflate?
In an impact of sufficient severity, the air bag sensing
system detects that the vehicle is in a crash. The sensing
system triggers a release of gas from the inflator, which
inflates the air bag. The inflator, air bag and related
hardware are all part of the air bag modules inside the
steering wheel and in the instrument panel in front of the
right front passenger.
How does an air bag restrain?
In moderate to severe frontal or near
even belted occupants can contact the steering wheel or the
instrument panel. Air bags supplement the protection
provided by safety belts. Air bags distribute the force of
the impact more evenly over the occupant's upper body,
stopping the occupant more gradually. But air bags would
not help you in many types of collisions, including
rollovers, rear impacts and side impacts, primarily because
an occupant's motion is not toward those air bags. Air
bags should never be regarded as anything more than a
supplement to safety belts, and then only in moderate to
-
severe frontal or near
frontal collisions.
What will you see after an air bag inflates?
After an air bag inflates, it quickly deflates, so quickly
that some people may not even realize the air bag
inflated. Some components of the air bag module
steering wheel hub for the driver's air bag, or the
instrument panel for the right front passenger's bag
will be hot for a short time. The parts of the bag that
come into contact with you may be warm, but not too
hot to touch. There will be some smoke and dust coming
from vents in the deflated air bags. Air bag inflation
doesn't prevent the driver from seeing or from being
able to steer the vehicle, nor does it stop people from
leaving the vehicle.
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frontal collisions,
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