In article , Dave Hinz wrote:
Still, airbags in automobiles intended for the US market are bigger than airbags in automobiles intended for other markets.
| The original concept of the airbag in the United States was as a | passive restraint safety feature and even today, US legislation | determines that the airbag should decelerate the otherwise unrestrained | driver and is of higher volume and deployed in a shorter time-frame in | comparison to systems used in Europe and Australasia. | | In the United States, legislation on safety issues is released by the | National Highway Traffic Safety Administration (NHTSA), with the | Federal Motor Vehicle Safety Standard (FMVSS) 208 for frontal impacts | calling for testing of airbags as a passive restraint system without | the use of a seat belt. This is because in some US states, the seat | belt wearing rate is less than 50% and therefore the system has to be | optimised for unrestrained occupants which implies a generally more | aggressive system. | | In Europe, the legislation ECE R94 for offset frontal impact protection | developed by the European Enhanced-safety of Vehicles Committee (EEVC) | focuses on the airbag as a supplementary restraint system with a seat | belted occupant and the use of a less aggressive airbag. Therefore, the | emphasis on airbags for Europe and Australasia is as a 'Supplementary | Restraint System' to the lap shoulder seat belts. Thus in general, | deployment thresholds are higher and airbag volumes lower in these | 'Supplementary Restraint Systems' compared to the 'Passive Restraint | Systems' found in the Unites States.
<