The Ministry had also suggested that the state transport departments of Delhi and NCR should check the authenticity through scientific random sampling process.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/ngt-fumes-poor-govt-response-%E2%80%98merely-because-it-iit-it-can%E2%80%99t-always-be-right%E2%80%99
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-institute-technology-iit
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-shipping-road-transport-and-highways
[8] http://admin.indiaenvironmentportal.org.in/thesaurus/national-green-tribunal-ngt
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diesel
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution-under-control-certification
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects