Jaipur is the political and economical capital of Rajasthan. The city currently houses a population of around 3.9 million in an area spanning 200 sq. km. It is historically the first planned city of the country built in a period of 4 years from 1727 to 1731 AD. Today, Jaipur is the center for education and employment opportunities in the state as well as a vibrant tourist destination. The improving socio-economic status, easy availability of vehicles, increase in population and lack of good public transport is resulting in steep growth of vehicles.

Vehicular Air Pollution in Colombo

In Colombo vehicles are responsible for 60% of the air pollution load. The city is falling into the toxic grip of motorization. Colombo is in the grip of deadly dieselisation: the current level of diesel technology and fuel quality represents very special risk, as diesel vehicle fleet is expanding in a maniacal pace. Diesel vehicles are 45% of the total fleet that already use up more than 90% of the diesel fuel. The policy to under tax diesel fuel and maintain a wide gap with petrol prices is largely responsible for this trend in the region.