On-road diesel vehicles were responsible for nearly half of the health impacts of air pollution from vehicles worldwide in 2015.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/majority-air-pollution-deaths-india-due-diesel-vehicles-emission-claims-study
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/financial-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diesel
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/respiratory-diseases