The Department of Motor Traffic said producing a gas emission certificate would be made compulsory from June 22 to obtain revenue licences for motor vehicles in the Southern, Central and North Central Provinces.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/gas-emission-level-test-must-3-more-provinces
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-mirror-sri-lanka
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution-under-control-certification
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sri-lanka