Why are vehicle emissions a constant in the fight against pollution in Delhi?

NEW DELHI: Episodic sources, such as burning stubble and firecrackers, could have increased Delhi's air pollution problems, but the capital cannot afford to ignore the constant sources of pollution, mainly transportation, industry and the dust, whose contributions put the entire National Capital Region at risk. during most of the year

The first inventory of high-resolution emissions of major pollutants in Delhi-NCR, conducted by the Indian Institute of Tropical Meteorology (IITM), Pune, under the Ministry of Earth Sciences (MoES), showed that the proportion of vehicle emissions increased not only in Delhi, but also throughout the NCR in 2018 compared to 2010.

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It showed an increase in the participation of the transport sector in global PM2.5 emissions from 25.4% in 2010 to 41% in 2018 in the capital, and from 32.1% in 2010 to 39.1% in 2018 in the NCR.


The governments in the Center and in Delhi, Haryana, Punjab and UP must begin to behave as if they recognize that the NCR faces a monumental public health emergency. This is not the time to blame games or credit for the few positive steps that have been taken. Even the concerted action of all governments may not be enough to cope with the crisis in the short and medium term, but anything else would be a criminal negligence of their duty and a complete abdication of leadership. Nor do we discuss which source of pollution deserves priority action. Every source, minor or major, needs an urgent approach. The central and state governments should jointly commit to a 5-year plan with annual AQI reduction targets to less than 100 by 2025, and less than 50 shortly thereafter. Breathing this toxic air puts us all in danger, especially children, even if we can make sure we won't have to do it in the future. The damage already done will continue to wreak havoc in the coming years, so every additional day of inhaling this poison is too much a day. As citizens and victims, we need to contribute, through efforts such as car sharing and maximizing the use of public transport. We need to treat these tasks as if our lives depended on them, because they do.

He said that a more than fourfold increase in the number of vehicles on the roads of Delhi during the 2010-18 period had eroded gains that could otherwise have accumulated due to the increase in the Delhi subway footprint in the last eight years. This strengthens the case of more public transport links in the NCR.

The emissions inventory report, published by the MoES at the end of last year, analyzed daily data on the 'kilometer traveled by the vehicle' (VKT) for different types of vehicles in the capital and observed that the four-wheel commercial segment, including Application-based booth aggregators, such as Ola and Uber, was one of the main polluting sources in Delhi in 2018.

Local car transport such as Ola/Uber/Meru, etc. It has a significantly high VKT of almost 1.45,000 km per year per car, the report says.

It also marked the emissions of four-wheelers registered in other states in the general emissions of automobiles in the capital. He noted that cars outside of Delhi contributed to almost 25-45% of the total emissions of four-wheelers.

“Every day, the loading of vehicles at eight different entry points in Delhi from other states is almost 11 lakh. The average speed of vehicles on the main roads of Delhi is only 20-30 km/h, which leads to low vehicle mileage and more emissions, ”said the report that analyzed vehicle movements on 80 roads on different roads. parts of the capital

The analysis showed that some roads, such as India Gate, Kashmiri Gate, Peeragarhi and Sardar Patel Marg, among others, experienced an increase in vehicle density on weekends compared to weekdays, an observation that can help those responsible politicians to prioritize the deployment of public transport buses in these segments.

Although the report did not have specific details on episodic sources, its sectoral findings on general annual emissions with respect to eight key pollutants are a strong argument to work simultaneously to minimize emissions from key constant sources of pollution, including vehicles, industries, plants Energy and construction