🌐EnglishEnglishEspañolFrançaisSvenskaالعربيةفارسی中文EntityQ6052822· pop 8· linked from 207 articlesInternational Roughness Indexroughness indexAvailable in 8 languagesEspañolFrançais中文العربيةCentral KurdishSvenskaفارسیvia Wikidata sitelinks · CC0ConnectionsroundaboutEntityWorld Bank GroupEntityCategoriesPavement engineering