The need of the hour is to encourage and strengthen the public transport so that there are few private vehicles in the city.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/experts-bat-strong-public-transport-mumbai
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-news-analysis-mumbai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mumbai
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/public-transport
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/transport
[7] http://admin.indiaenvironmentportal.org.in/thesaurus/bus-rapid-transit-system