air bag

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air bag

A safety device installed in passenger cars and other vehicles (including helicopters and motorcycles) which consists of a rubberised nylon bag that inflates rapidly in frontal impacts, and, in an increasing number of vehicles, in side impacts. Dashboard air bags are standard equipment in personal vehicles in the US; side impact bags are usually “factory options”.
Mechanism Airbags detonate by spark ignition of sodium azide, nitrogen gas, ash, and NaOH.
Pros Estimated 6,377 lives saved from 1990 to 2000 (US); airbags reduce traffic fatalities by ±6.5%, assuming that a shoulder belt is worn.
Cons Skin abrasions, hearing loss due to loud (165-175 dB)deployment explosion, head injuries, eye damage (chemical keratitis, photophobia related to intraocular deposition of powder, ocular contusions), broken nose and upper extremities, burns due to hot gases, and death (which peaked at 53 in 1997, with a total of 175 between 1990 and 2000, per US National Highway Traffic Safety Administration). Air bags may deploy during rescue efforts by emergency personnel.
Causes of death Decapitation (infants, especially in rear facing seats), injuries including aortic transection; at highest risk are infants and children under age 13 years, those under 160 cm in height, and the elderly.

air bag

A balloon, positioned in a car steering wheel or dashboard, that inflates rapidly triggered by a deceleration sensor. A sudden chemical reaction generates nitrogen that, very briefly, inflates the balloon. The latter almost immediately deflates.
References in periodicals archive ?
A number of suggestions have been made to automobile manufacturers to avoid such problems, but which if any of these changes in air bag design and utilization will soon materialize remains to be seen.
Under limited circumstances, the federal government is also allowing vehicle owners to install on-off switches or disconnect air bags in older models.
Facing the allegations of faulty making of air bags, Takata, endorsed Toyota's recall and said it would cooperate with NHTSA and customers with replacement of parts and undertake a detailed technical analysis.
Though strongly discouraged, transporting a child in this age group in the front seat with a passenger air bag can be done safely if the child is properly restrained.
Federally mandated seatbelts have saved countless lives, and air bags are credited with preventing roughly 1,100 deaths to date.
The most welcome change is the addition of dual air bags and the elimination of those awful passive seatbelts.
But regardless of the degree of increased use that safety-belt laws might achieve, air bags would substantially reduce injuries and deaths even more if installed as standard equipment in full front seats.
Faulty Air Bag Replacements Put Consumer Lives At Risk
Now that there are so many more cars that have not only air bags that deploy from the steering wheel and passenger dash areas, but also for side impact in the doors, there are definitely concerns and dangers to rescue and emergency workers called to the scenes,'' said fire Capt.
The primary threat to children from passenger-side air bags is suffocation.
Starting at $19,999, the Maxima GXE comes with a full complement of power accessories and dual air bags.
Because they prove the value of air bags beyond a shadow of a doubt-- yet delays continue in making the technology available to the public.