A few years back, Beijing and Delhi were competing with each other for being some of the most polluted cities in the world. Between 2000 and 2009, Beijing was far worse than Delhi in terms of air pollution. However, in recent years, the air quality of Beijing began improving while Delhi's pollution levels continued to increase. In 2017, the concentration of PM 2.5 (particulate matter with a size of 2.5 microns or less) in Beijing was less than half that of Delhi. The number of “very unhealthy” days in Delhi is four times more than that of Beijing. The reason behind Beijing’s successful reduction of atmospheric pollution is due to the series of stringent measures to reduce the carbon emission into the atmosphere. One among them is the focus on the automobile sector. In 2017, the quota for new vehicles was fixed at 150,000 cars of which 60,000 was allotted only to the fuel-efficient cars. In 2018, this quota was reduced to 100,000. Although an average Indian contributes only a microscopic amount of transport-related carbon dioxide emissions to the global climate change, congested streets and polluted air are common aspects seen in the Indian metropolises. It is not only discomforting on a daily basis but is also a long-term health hazard to those who are living in big cities like Delhi.