道路交叉口交通冲突灰色评价研究

交通冲突技术是国际交通安全领域新兴开发的非事故统计评价方法,是以大样本、快速、定量研究评价交通安全现状与改善效果的特点而异于传统的事故统计评价方法。本文应用交通冲突技术,引入交通冲突与混合当量交通量的比值(TC MPCU)作为评价指标,提出对以时均交通冲突和交通量数据为依据的交叉口进行安全评价的交通冲突灰色聚类评价法,并设计了计算软件,为交叉口的安全评价提供一种新的研究途径。最后提出了基于交通冲突技术的交叉口安全改善方法,以实现安全评价的最终目的。

Evaluation of Traffic Conflict Based on Gray Theory at Intersection

The traffic conflict technique is new evaluating method based on no-accident statistics in traffic safety field.It evaluates rapidly and quantitatively traffic safety situation with multi-stylebook which is different from traditional accident statistical evalution.The paper proposes an evaluating method of traffic conflict based on gray cluster theory by means of regarding TC/MPCU as index and designs computing program with Visual Basic,which provides a new evaluation method for safety of intersection.On the other hand,methods of safety improvement based on traffic conflict technique are introduced at intersection in order to reach on objective of safety evaluation.