The big difference between the petrol and diesel taxes has caused an increased usage of diesel run cars, the main culprit in fouling up the air
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/nothing-international-about-new-norms
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-indian-express-chennai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-pollution-control-board-cpcb
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-standards
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-environment-and-forests-moef
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cse
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chennai-t