Abstract: Speed is one of the most important factors that could influence the safety of road, and there existed many operating speed prediction models and road safety evaluation models now adays, but some seriously black spot can not be identified still.This paper established a two-indexes freeway alignment evaluation model, based on the data of a freeway. The conclusion, of applying of this model on another freeway , paralleled to reality had been obtained.

Key words: a lignment evaluation, speed, two-indexes, safety scale

摘要： 车速是影响道路安全性的重要因素,目前已经有非常多的运行车速预测模型和以车速为基础的道路安全评价模型,但是有些很突出的事故黑点仍然不能被鉴别和分析出来.本文以某高速公路的数据为基础,提出了以运行车速为基础的双指标高速公路线形评价方法.通过对另一高速公路进行线形评价,得到了与实际情况具有较好吻合性的结论.

关键词: 线形评价, 车速, 双指标, 安全等级