China Dingyuan Automobile Test Site is a national automobile new product stereotypes testing institution and a functional organization of the Army Military Product Stereotyping Committee. 1996 passed the metrological certification and institutional approval of the State Bureau of Technical Supervision and the Ministry of Institutional Industry. In 2000, it was authorized by the national competent department to carry out the basic type test of new automobile products, and in 2003, it was approved by the national laboratory, which can carry out all the test items that need to be completed in the type test of automobile products. China Dingyuan Automobile Test Site is located in Dingyuan County, Anhui Province, covering an area of nearly 6.7 kilometers. Sup2 (about/10 000 mu) is the largest automobile proving ground in China. At present, it has 4km elliptical high-speed test loop, 2.2km comprehensive performance test road, 6.6km rugged test road, 10km cross-country road and 5km mountain road, as well as important special test facilities such as terrain passability test facilities, urban working condition simulation test square, rain test bench, centroid test bench, standard longitudinal slope (20%~60%) and domestic advanced complete sets of test facilities. In recent years, in order to further improve the detection methods and strengthen the construction of indoor laboratories, China Dingyuan Automobile Test Site has successively completed the construction of lighting laboratories, compulsory testing laboratories, environmental laboratories and safety laboratories. At the same time, in order to meet the national requirements for compulsory inspection of motor vehicles, efforts will be made to create conditions for national compulsory inspection qualifications.