Examples of the types of accidents in which the SRS curtain airbag is 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 is involved in a side-on impact from a motorcycle.
There are many types of collisions which might not necessarily require SRS curtain airbag deployment. In the event of accidents like those illustrated, the SRS curtain airbag may not deploy depending on the level of accident forces involved.
See also:
Unleaded gasoline
The neck of the fuel filler pipe is designed to accept only an unleaded gasoline filler nozzle. Under no circumstances should leaded gasoline be used because it will damage the emission control system ...
Tether anchorage location
Legacy
Three tether anchorages are installed on the rear shelf behind the rear seat
head restraint. Open the cover flap to use each anchorage.
Three tether anchorages, i.e., ones for the right, ...
Fuel
...
