长下坡路段交通安全评价方法

Evaluation Method for Traffic Safety of Long Downgrade Road

分析了影响长下坡路段交通安全程度的主要因素和以前交通安全评价方法存在的弊端,提出了长下坡路段交通安全程度多指标综合评价方法。即利用主成份-聚类分析法计算出交通安全综合评价指标,对长下坡路段的交通安全状况进行定量评价,并按照综合指标对路段各部分安全性进行分类。应用实例表明,该方法对具体长下坡路段安全状况的评价结论能够准确地反映实际安全状况。

The main factors that influence the traffic safety of long downgrade road are analyzed, the disadvantages of traffic safety assessment are introduced, and the traffic safety synthetic assessment method with multiple indexes is put forward. The traffic safety synthetic assessment index is calculated using principal component-cluster analysis method to assess the level of safety condition of long downgrade sections quantitatively ,the sections of long downgrade are classified according to this synthetic index. The validation case in this study shows that result of the traffic safety synthetic assessment can reflect the safety condition of long downgrade sections accurately.