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簡介：京珠北高速公路從通車的第一天起就接連發生惡性交通事故，從使用至今已經有五百餘人在這條公路上因交通意外死亡。警方重點分析了這條公路的各個路段，終於找到了事故頻發的原因。原來貨車們多有超載，在下坡路段上又只靠剎車控制速度，京珠北公路有一段超長的下坡路，長時間的剎車造成剎車片使用過度，過熱失靈，導致大貨車失控。根據警方的意見，公路管理部門改造了京珠北高速公路，大大減少了交通事故的發生。收起
死亡高速調查 《走近科學》20110923
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