The Punjab and Haryana High Court has already banned the plying of diesel auto-rickshaws because they create excessive air pollution with poisonous smoke emitting from them.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/diesel-autos-continue-ply-woeful-lack-cng-stations
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/tribune-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diesel
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/three-wheelers
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/amritsar-t
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cng
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution