Delhi govt writes to LG for authorisation to issue challans; rule to apply to all cars entering Delhi.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/20-categories-exempt-two-wheelers-women-drivers-hybrid-cars-vvips-except-delhi-cm-kejriwal
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution-control
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/odd-even-numbered-cars
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/two-wheelers
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cng
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/battery-vehicles