What makes an air bag inflate?; How does an air bag restrain?; What will you see after an air bag inflates?- Page 32

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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. For both
frontal and side impact air bags, 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, instrument panel and the side of the driver’s
seatback closest to the door.

How does an air bag 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. The air bag supplements 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 the frontal air
bags would not help you in many types of collisions,
including rollovers, rear impacts, and many side
impacts, primarily because an occupant’s motion is not
toward the air bag. The side impact air bag would not

help you in many types of collisions, including frontal
or near frontal collisions, rollovers, and rear impacts,
primarily because the occupant’s motion is not toward
that air bag. 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 for the driver’s and right front passenger’s
frontal air bags, and only in moderate to severe side
collisions for the driver’s side impact air bag.

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 

--

 the

steering wheel hub for the driver’s air bag, the
instrument panel for the right front passenger’s bag, the
side of the seatback closest to the door for the driver’s
side impact air 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 the vents in the
deflated air bags. Air bag inflation doesn’t prevent the
driver from seeing or being able to steer the vehicle, nor
does it stop people from leaving the vehicle.