In Kolkata city the road transports are maintained by private and Government organization. A major work force belonged to the State Transport Corporation (KSTC), Government of West-Bengal. The pollution caused by these vehicles affects the workers health and caused different types of respiratory problems.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/pulmonary-function-abnormalities-associated-exposure-automobile-exhaust-diesel-bus
[2] http://admin.indiaenvironmentportal.org.in/category/author/b-p-chattopadhyay
[3] http://admin.indiaenvironmentportal.org.in/category/author/j-alam
[4] http://admin.indiaenvironmentportal.org.in/category/author/roychowdhury
[5] http://admin.indiaenvironmentportal.org.in/category/journal/lung
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/respiratory-diseases
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diesel-buses
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kolkata
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/calcutta-t
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/road-transport
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/occupational-health