The Central Government has undertaken a study, i.e., ‘Air Quality Monitoring, Emission Inventory and Source Apportionment Study for (six) Indian Cities’, namely, Delhi, Kanpur, Pune, Mumbai, Chennai and Bengaluru with the help of premier institutions like, IIT-Bombay, IIT-Kanpur, IIT-Madras, NEERI-Nagpur, TERI-New Delhi and ARAI-Pune for identifying the various mobile and stationary