Early rollover testing revealed impact areas and pointed the way to the solution: a combination of airbags, advanced restraints and progressive resistance head protection. All three were repeatedly tested.
Two types of airbags are deployed in a side impact rollover collision: the Inflatable Head Curtain protects the attendant from the inhalation area cabinet. The Tubular Structure airbag is used with the attendant and the CPR seats for additional head protection.
Only dynamic testing with instrumented dummies can determine where head strikes occur.