Saab's Active Head Restraint Gets International Attention

Posted on 11. Nov, 2001 by in 2000-2009, Innovations

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Photo Credit: Saab Automobile

2001-11-30

Better in practice than in theory
Saab’s Active Head Restraint Gets International Attention

The highly regarded American medical publication Journal of Trauma devotes a large part of its November issue to the SAHR, the Saab Active Head Restraint. The magazine has in particular reviewed the inquiry which shows that the device, fitted to the front seats, reduces the risk of severe neck injuries in rear-end collisions by 75 percent. The analysis rests on a comparative study between the Saab 900 and 9000, which have standard neck guards, and the newer models Saab 9-3 and 9-5, which are equipped with the SAHR.

The Journal of Trauma has run a comparative scrutiny of the study, its methods and its results. The conclusion is that the SAHR represents a real breakthrough in the field of protection in the event of rear-end collisions. Even though the earlier Saab models have seats that are ranked among the best on the market, the SAHR reduces the risk of severe neck injuries by a further 75 percent.

“In light of our laboratory tests we expected to see neck injuries declining by around thirty percent. Now that a couple of years have passed, enabling us to carry out a study of the findings from actual service, it has emerged that the reality is better than that”, says Stefan Olsén, development engineer in Saab’s Collision-Safety Department.

The inquiry was conducted on the basis of accident data from the insurance company DIAL. The drivers of the crashed cars answered a questionnaire and were interviewed by telephone. Besides a marked decline in neck injuries, it was found that none of the SAHR-equipped seats had needed to be replaced or repaired after the accidents.

The modus operandi of the SAHR is that the body is pressed into the backrest of the seat, thereby activating a mechanism that causes the head restraint to snap upwards and forwards, arresting the rapid motion of the head that is produced by a collision from behind and minimizing the relative movement between the head and the lower part of the neck. In this way the device also helps to make up for the fact that many people ride around with their neck guards wrongly adjusted.

“When such a prestigious organ as the Journal of Trauma confirms our findings it marks a great success for our work on collision safety. It’s also evidence that our Real-Life Safety philosophy is sound and that we’re doing the right thing when we compare our laboratory trials with what subsequently happens on the roads. Good laboratory tests are all very well, but absolutely the most important thing for us is that our safety systems work properly in real-life accidents”, says Stefan Olsén.

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3 Responses to “Saab's Active Head Restraint Gets International Attention”

  1. no

    04. Sep, 2012

    lol who invented it lol ahaha lol lol

    Reply to this comment
  2. maybe

    05. Sep, 2012

    Your answer is wrong my friend. The correct answer actually is that it wasdesigned in 1980 by former Winston Cup Crew Chief, George White due to the reason that The dingo is a free-roaming wild dog unique to the continent of Australia, mainly found in the outback. Its original ancestors are thought to have arrived with one of the waves of human settlement thousands of years ago, when dogs were still relatively undomesticated and closer to their wild Asian grey wolf parent species, Canis lupus. Since then, living largely apart from people and other dogs, together with the demands of Australian ecology, has caused them to develop features and instincts that distinguish them from all other canines. Dingoes have maintained ancient characteristics that

    unite them, along with their closest relatives from Southeast Asia and the Pacific, into a taxon named after them, Canis lupus dingo, which separate them from dogs classified as Canis lupus familiaris. A dingo’s natural habitat can range from deserts, to grasslands and on the verge of forests. They cannot live too far away from water and they normally settle their homes in dens, deserted rabbit holes, and hollow logs.
    Dingoes play an important role in Australia’s ecosystems; they are apex predators and the continent’s largest terrestrial predator. Because of their attacks on livestock, dingoes and feral domesticated dogs are seen as pests by the sheep industry and the resultant control methods normally run counter to dingo conservation efforts. The cattle industry may benefit from the predation of dingoes on rabbits, kangaroos, and rats.
    Today, it is estimated that the majority of the modern “dingoes” are also descended from more recently introduced domestic dogs. The number of these so-called dingo hybrids has increased significantly over the last decades, and the dingo is therefore now classified as vulnerable.

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