The conductor noticed smoke coming out of the rear of the vehicle and asked the driver to stop the bus
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/low-floor-bus-catches-fire-0
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/asian-age-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cng-buses
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cng-safety
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/public-transport
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/high-capacity-bus
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-transport-corporation-dtc
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi