1. Standard Test Method for Measurement of Vehicular Response to Traveled Surface Roughness;ASTM, ASTM E1082–90(2007),2007
2. International experiment to establish correlations and standard calibration methods for road roughness measurement, World Bank Technical Paper 45;Sayers,1986
3. FHWA, Highway performance monitoring system, field manual, Appendix J. Order M 5600.14, Federal Highway Administration (FHWA), U.S. Department of Transportation, Washington, DC, 1990.
4. International Roughness Index specifications around the world;Múčka;Road Mater. Pavement Des.,2017
5. Statistical Bulletin on Transport Industry Development in 2021, Ministry of Transport of People's Republic of China. https://xxgk.mot.gov.cn/2020/jigou/zhghs/202205/t20220524_3656659.html, 2022 (accessed May 25, 2022).