虽然传统的腰带式和肩带式安全带每年都能防止数千起死亡事故,但也会引起研究人员所谓的“安全带并发症”(seat-belt syndrome)。安全带可能导致人体组织、肌肉和脊椎的严重损伤,尤其是在猛烈的撞车事故中。气囊安全带的应用正是为了降低这一风险。传统的气囊系统一般安装在汽车的方向盘等地方,在撞车时点燃固态燃料并产生气体,使气囊迅速膨胀。为防止乘客被炙热气体灼伤,气囊安全带使用冷气体来给气囊充气。
Ford says it currently offers bag-in-belt systems on four models -- the Explorer, the Flex wagon and the Lincoln MKT. About 25% of people who buy those vehicles order the bag-in-belt option, Ford says. Mercedes says it will likely move the technology into other models, but isn't outlining specific plans.
福特公司表示,其目前在四款车型上提供气囊安全带,分别为Explorer、Flex旅行车和林肯(Lincoln)MKT。在购买上述车型的消费者中,约有25%选购了气囊安全带配置。梅赛德斯-奔驰公司称,其打算将这一技术运用到其他车型上,但还没有公布具体计划。
Spot Pedestrians in the Dark
夜视行人识别系统
Safety regulators around the world are increasingly focused on motor-vehicle accidents involving pedestrians, and that's spurring development of new systems to help drivers see people on foot before it's too late.
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