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路面平整度仪是交通部高速公路课题内的一项研究任务。西安公路研究所自一九八一年初开始研制,一九八一年十月试验样机研制成功,后经数百公里的试验和改进,现已正式定型。
Pavement roughness meter is the Ministry of Communications Highway project a research task. Xi’an Highway Research Institute has been developing since early 1981, and the pilot prototype was successfully developed in October 1981. After several hundred kilometers of tests and improvements, the Xi’an Highway Research Institute has been officially finalized.