位于中国吉林省长春市的农安试验场，其汽车试验D1动态测试广场工程，区域面积为53531平方米，全区域内道路国际平整度指数（IRI）平均值为0.83m/km。经世界纪录认证官方审核，被确认为“世界最平整的汽车试验测试道路”。纪录编号：WRC260206C

The Nong’an Proving Ground, located in Changchun, Jilin Province, China, features its Automotive Testing D1 Dynamic Test Plaza project with a total area of 53,531 square meters. The average International Roughness Index (IRI) across all roads within the area is 0.83 m/km. Verified by World Record Certification, it has been confirmed as the “Flattest Automotive Test Road”.

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