How Does An Airbag Restrain; What Makes An Airbag - Chevrolet 2013 Spark Owner's Manual

3-22 Seats and Restraints
The vehicle has seat-mounted side
impact airbags for the driver, front
passenger and for the second row
outboard passengers. The vehicle
has roof-rail airbags. See Airbag
System on page 3 17.
Seat-mounted side impact airbags
and roof-rail airbags are intended to
inflate in moderate to severe side
crashes depending on the location
of the impact. In addition, these
roof-rail airbags are intended to
inflate during a rollover or in a
severe frontal impact. Seat-mounted
side impact airbags and roof-rail
airbags will inflate if the crash
severity is above the system's
designed threshold level. The
threshold level can vary with
specific vehicle design.
Roof-rail airbags are not intended to
inflate in rear impacts.
A seat-mounted side impact airbag
is intended to inflate on the side of
the vehicle that is struck. Both
roof-rail airbags will inflate when
either side of the vehicle is struck or
if the sensing system predicts that
the vehicle is about to roll over on
its side, or in a severe frontal
impact.
In any particular crash, no one can
say whether an airbag should have
inflated simply because of the
vehicle damage or repair costs.

What Makes an Airbag

Inflate?
In a deployment event, the sensing
system sends an electrical signal
triggering a release of gas from the
inflator. Gas from the inflator fills the
airbag causing the bag to break out
of the cover. The inflator, the airbag,
and related hardware are all part of
the airbag module.
For airbag location, see Where Are
the Airbags? on page 3 19.
How Does an Airbag
Restrain?
In moderate to severe frontal or
near frontal collisions, even belted
occupants can contact the steering
wheel or the instrument panel. In
moderate to severe side collisions,
even belted occupants can contact
the inside of the vehicle.
Airbags supplement the protection
provided by safety belts by
distributing the force of the impact
more evenly over the
occupant's body.
Rollover capable roof-rail airbags
are designed to help contain the
head and chest of occupants in the
outboard seating positions in the
first and second rows. The rollover
capable roof-rail airbags are
designed to help reduce the risk of
full or partial ejection in rollover
events, although no system can
prevent all such ejections.