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”.
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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