Kolkata best megacity, Delhi worst in commute pollution: CSE

• An analysis of 14 cities in India, including six megacities and eight metropolises, on how they fare when it comes to pollution and energy consumption from urban commuting, places Kolkata as the top-performing megacity. Bhopal leads the list on the lowest overall emission. Delhi and Hyderabad are the two cities that fare at the bottom of the table in terms of pollution and energy use.

• The report titled ‘The Urban Commute and How it Contributes to Pollution and Energy’, compiled by the Centre for Science and Environment was released.

• Air pollution is a national crisis and road transport was the sector showing the highest increase in the emission of greenhouse gases.

• Motorisation in India is explosive. Initially, it took 60 years (1951-2008) for India to cross the mark of 105 million registered vehicles. Thereafter, the same number of vehicles was added in a mere six years (2009-15).

• In the study, with an aggregate of toxic emission from urban commuting practices, such as particulate matter and nitrogen oxides, the cities were ranked on calculations of heat-trapping (CO2).

• The study took two approaches to rank the cities – one based on overall emission and energy consumption and the other on per person trip emission and energy consumption.

• In terms of overall emission and energy consumption, Bhopal was followed by Vijayawada, Chandigarh and Jaipur.

• Delhi ranked at the bottom of the table for overall emission. According to the report, though metropolitan cities scored better than megacities due to lower population, lower travel volume and lower vehicle numbers, they were at risk due to much higher share of personal vehicle trips.

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