Municipal corporations have proposed a hike in parking charges, particularly during peak hours, as a means to keep vehicles off the roads and reduce the city's air pollution.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/civic-bodies-propose-hike-parking-fee-clean-delhi%E2%80%99s-air
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-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/parking-pricing
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/municipal-corporations
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/centre-science-and-environment-cse
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/parking-policy