To bring vehicular pollution under control, the state government has made 'green tax' mandatory for all motor vehicles in Uttar Pradesh.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/green-tax-vehicles-now-mandatory-experts
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-noida
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uttar-pradesh
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/regulations
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution-control
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cse