通过分析高速公路路侧环境的实际情况,考虑防止车辆驶出路外、避免侧翻或碰撞事故、降低事故严重性等因素,建立了路侧容错环境评价指标体系。运用灰色聚类评价法与粗集理论(RST-GCE)建立了高速公路路侧容错环境的综合评价模型。同时,应用所建立的评价模型评价某运营高速公路路侧容错环境,评价结果与实际情况相符。研究表明,所建立的高速公路路侧容错环境评价指标体系和模型合理,可为高等级公路路侧安全评价提供参考。

Through an analysis on the expressway roadside environment from the real situation, a evaluation index system for roadside fault-tolerant environment was established to take following three aspects into consideration, that is, preventing vehicles from rushing out the laneway, avoiding the side tumbling or crash, and reducing accident severity. The Rough Set Theory and Gray Clustering Evaluation (RST-GCE) are used to establish an evaluation model for the roadside fault-tolerant environment. And then, the evaluation model is applied to evaluate an operational expressway and the result is consistent with the reality. It shows that the established evaluation index system and the model are rational and feasible. This model could provide some guidelines for the safety evaluation of high grade highway in China.