The_Dark_Side said:
you've really surprised me by saying airbags aren't compulsory though.
Yeah odd one that not many people realise that you do not need an airbag by law in a car.
Seat belts, yes, child seat/ booster cushion for under 12's, yes (now anyway), airbags and pre-tensioners, no.
The legislation for crash tests ECE REG17, Euro Ncap, FMVSS 208, etc, have fairly tight tolerances on allowable HIC (Head Injury Criteria), chest compression, and other mesurable levels.
All manufacturers, also have their own in house allowances/guidelines, while these are not satutory, they are of a much higher level than that the statutory regulations.
With the Crash Test engineers having to try and work with the designers of the cars to get their vehicles to pass all these levels of guidelines/regulations, while keeping everything within the design remit of the vehicle and packaging everything within tha allowed areas, while also keeping the aesthetics looking right for the intended market, it is often much easier to fit airbags/pre-tensioners everywhere, rather than spend an awful lot more time, money, and energy, on designing a safe car without these gadgets.
In some instances, Elise is a case in point, there is physically no room to fit airbags and still keep the aesthetics of the vehicle in check, so they don't they just work harder at getiing everything else right so an airbag is not really needed, the pre-tensioner in an Elise is one of the best we have ever tested, it needs to be as there is no airbag as backup, the only thing stopping the driver from piling into the steering wheel and column, is the belt and pre-tensioner, so they are both of much higher quality, than found in other vehicles.