8.1高速公路性能评价 、路面服务性能指数PSI (Present Serviceability Index) 二、分项综合指标评价方法 (Subentry-Combined Evaluation of Pavement Serviceability) 2021/2/212021/2/21 2 8.1 高速公路性能评价 一、路面服务性能指数PSI (Present Serviceability Index) 二、分项—综合指标评价方法 (Subentry-Combined Evaluation of Pavement Serviceability)