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简介：京珠北高速公路从通车的第一天起就接连发生恶性交通事故，从使用至今已经有五百余人在这条公路上因交通意外死亡。警方重点分析了这条公路的各个路段，终于找到了事故频发的原因。原来货车们多有超载，在下坡路段上又只靠刹车控制速度，京珠北公路有一段超长的下坡路，长时间的刹车造成刹车片使用过度，过热失灵，导致大货车失控。根据警方的意见，公路管理部门改造了京珠北高速公路，大大减少了交通事故的发生。收起
死亡高速调查 《走近科学》20110923
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