Chevrolet 2005 Astro, Owner'S Manual

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Whether your frontal airbags will or should deploy is not
based on how fast your vehicle is traveling. It depends
largely on what you hit, the direction of the impact
and how quickly your vehicle slows down.
If the front of your vehicle goes straight into a wall that
does not move or deform, the threshold level is
about 9 to 16 mph (14 to 26 km/h). (The threshold level
can vary, however, with specific vehicle design, so
that it can be somewhat above or below this range.)
Airbags may inflate at different crash speeds.
For example:
•
If the vehicle hits a stationary object, the airbag
could inflate at a different crash speed than if
the object were moving.
•
If the object deforms, the airbag could inflate at a
different crash speed than if the object does not
deform.
•
If the vehicle hits a narrow object (like a pole),
the airbag could inflate at a different crash
speed than if the vehicle hits a wide object
(like a wall).
•
If the vehicle goes into an object at an angle, the
airbag could inflate at a different crash speed
than if the vehicle goes straight into the object.
The frontal airbags (driver and right front passenger)
are not intended to inflate during vehicle rollovers, rear
impacts, or in many side impacts because inflation
would not likely help the occupants.
In any particular crash, no one can say whether an
airbag 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 Airbag Inflate?
In an impact of sufficient severity, the airbag sensing
system detects that the vehicle is in a crash. The
sensing system triggers a release of gas from the
inflator, which inflates the airbag. The inflator, airbag,
and related hardware are all part of the airbag modules
inside the steering wheel and in the instrument panel
in front of the right front passenger.
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