高速公路施工中，因路况不好，曾发生过一辆拉土车翻车砸死3个民工的事故。
B-Thing I-Thing I-Thing I-Thing B-Time I-Time I-Time O O O O O O O B-Time I-Time I-Time I-Time B-Metric I-Metric B-Thing I-Thing I-Thing O B-Thing O O B-Metric I-Metric B-Person I-Person O O O O