ESTIMATION AND ANALYSIS OF VARIOUS POLLUTANTS IN MIXED TRAFFIC CONDITIONS – A COMPARATIVE STUDY

The Transport sector in the Indian Megacity of Hyderabad contributes extensively to climate change through greenhouse gases emitted by vehicles. There are infrastructure projects like construction of flyovers, expansion of the existing roads, laying new roads, improvement of vehicle technology etc. Nevertheless the pollution levels are high. The area of study, HYDERABAD has 6,809,970 population (according to 2014 census) and with a vehicular population of around 3.4 million. Nine junctions are selected where there is a less influence of industries and more influence of vehicular pollution. The pollutants chosen are Carbon Monoxide (CO), 1, 3 butadiene and total polycyclic aromatic hydrocarbons (PAHs).Traffic count is done at nine road intersections of varying land-use patterns. Suitable net emission factor for each vehicle category and type of engine are selected. Finally a geographic information system (GIS)-based maps have been prepared for different vehicular emissions and comparing the pollution levels from BSIII and BSIV engines