交通灾害的实质特征是它的社会性。
The essential character of the transportation catastrophe is sociality.
在对高速公路交通灾害进行调查分析的基础上，考虑影响交通灾害预誓的主要因素。
Based on the investigation and analysis of freeway traffic disasters, the main influential factors caused the traffic disaster were taken into account.
本论文力图以交通复杂性较高的高速公路为代表，探索交通灾害规律和预警预防机理。
This thesis tries to discuss the freeway that is more complex in traffic areas as to represent, and to investigate the traffic disaster regulation to prevent the mechanism with the forewarning.
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