Vauxhall Astra Owner's Manual page 92

The curtain airbag system will be triggered:
z depending on the severity of the
accident,
z depending on the typ e of impa ct,
z within the range shown in the illustration
on the driver' s door or front passenger
door,
z together with the side airbag sy stem,
z independently of the front airbag
system .
90
When triggered, the curtain airbag inflates
in millisecond s to form a sa fety cushion in
the head area on the side of the vehicle
affected . This substantially reduces the risk
of injury to the head in the event of a side-
on c ollision.
There m ust be no objec ts in the area in
which the airbag inflates. Do not place
the hands or arms on the covers of the
airbag sy stems. Important information –
see page 94.
The three-point seat belt must alway s be
correctly fitted – see pag e 84.
The curtain airbags will not b e triggered in
the event of
z the ignition is switched off,
z frontal collisions,
z accidents in which the vehicle overturns,
z collisions involving a rear impact,
z collisions involving a side impact outside
the passenger cell.