“七五”国家科技(攻关)项目“干线公路(省、市级)路面评价养护系统开发”(75-24-03-04)于1991年2月9～11日在北京通过了由交通部主持的国家级验收鉴定. 由交通部公路科学研究所等单位承担的这一国家攻关专题,确定了路面质量评价指标,统一了数据调查测定方法,完成了对路况调查 “Seventh Five-Year” National Science and Technology (tackling key issues) “Mainline Highway (provincial and municipal) pavement evaluation and maintenance system development” (75-24-03-04) in February 9, 1991 to 11 in Beijing passed the Ministry of Communications Presided over the state-level inspection and acceptance by the Ministry of Communications Highway Science Institute and other units to undertake this national tackling topics, to determine the pavement quality evaluation indicators, unified data survey and determination methods, completed the road survey