Most vehicles in the city clear the pollution test with flying colours.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/third-party-scrutinise-vehicle-emission-levels
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-indian-express-hyderabad
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/telangana
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hyderabad-t
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution-under-control-certification
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution-control