Study says emissions from increased fleet of exempt vehicles may have offset any reduction from cars
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/levels-pollutants-increased-during-odd-even%E2%80%99
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/odd-even-numbered-cars
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cars