Examples of the types of accidents in which the SRS side airbag and SRS curtain airbag are unlikely to deploy.

1) The vehicle is involved in an oblique side-on impact.
2) The vehicle is involved in a side-on impact in an area outside the vicinity of the passenger compartment.
3) The vehicle strikes a telephone pole or similar object.
4) The vehicle is involved in a side-on impact from a motorcycle.
5) The vehicle rolls onto its side or roof.
There are many types of collisions which might not necessarily require SRS side airbag and SRS curtain airbag deployment.
In the event of accidents like those illustrated, the SRS side airbag and SRS curtain airbag may not deploy depending on the level of accident forces involved.
See also:
Driving on grades
● Before going down a steep hill, slow down and shift into lower gear (if necessary,
use 1st gear) in order to utilize the overheating of your vehicle’s brakes. Do not
make sudden downshifts ...
Electronic Brake Force Distribution (EBD) system
warning
The brake system warning light also
illuminates if a malfunction occurs in the
EBD system. In that event, it illuminates
together with the ABS warning light.
The EBD system may be malfunctionin ...
Safety
The Insurance Institute for Highway Safety crash-tested the 2008 Impreza, and
the car earned a Good overall rating — the highest possible score — in
frontal-offset, side-impact and rear crash test ...
