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高铁为什么不用安全带？_IT与交通
source link: http://www.cnbeta.com/articles/tech/676187.htm
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有个事，如果不说，你或许根本意识不到：飞机上有安全带，汽车上有安全带，而你乘坐的300km/h的高铁上却没有安全带！这是为啥呢？答案就是：全世界的高铁都没有安全带！这不是在开玩笑，这是高铁诞生后历经“进化”选择的结果。
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