Odd scheme in Delhi: exempting two-wheelers is not a good idea, experts say

NEW DELHI: which form the majority of vehicles in Delhi, have been exempt from the. Experts say this could nullify any progress made in the air of the capital during the third edition of the scheme.

“The government's decision will reduce the potential impact of the scheme. , which are major contributors to pollution, will reduce government efforts, said Sumit Sharma, director of earth sciences and climate change at the Institute of Energy and Resources (TERI).

A study by TERI and the Automotive Research Association of India (ARAI) in 2018 showed that vehicles contributed around 28% to Delhi's PM2.5 concentrations in the winter season.

“Within the vehicle category, the participation of PM2.5 in cars was 12%, 25% two-wheelers, 29% trucks, 17% 3-wheelers, 9% buses, 5-wheelers % and light commercial vehicles contributed to 3% of PM 2.5 sharing. In addition, during specific days (episodes) of high burning of agricultural residues, which represent almost 40% of PM2.5 these days, the proportion of transport emissions is eclipsed. In the current situation when the burning of agricultural stubble has dominant contributions, the percentage reductions may be much lower than expected. However, it will reduce some of this great pollution burden, ”said the expert.

Two-wheelers accounted for almost 56% (6.38 million) of the total vehicles in the city in 2018, according to a study of emissions inventory conducted by the MoES in 2018. In comparison, private gasoline and diesel cars they are only 14% and 8%, respectively.

A 2015 study by IIT-Kanpur highlighted that two-wheelers were the second most polluting vehicles, just after the trucks. While four-wheelers issued 10% of the total load, the participation of two-wheelers was 33%.

According to a DTU study: the effect of the odd and even driving scheme on PM2.5 and PM1.0 emissions, the exemption for two-wheelers was one of the reasons behind the relatively small reduction in the levels of pollution during the first edition. “The Panchkuian Road corridor, the Najafgarh Road corridor and Pitampura-Madhuban Chowk had around 80,307 two-wheeled vehicles that sailed daily, representing approximately 25% of total traffic. The exemption from the scope of the even-odd driving restriction to such a large fraction of vehicles compensates for any significant benefit, ”said the study led by Rajeev Kumar Mishra.

According to Dipankar Saha, former head of the air laboratory of the Central Pollution Control Board, it would be difficult to assess the impact of odd-even with these exemptions. “Two-wheelers help pollute more in any urban or rural area. Therefore, with its exemption, the achievement would be difficult to assess. In addition, the impact can be assessed under similar weather conditions, which is not expected. Western disturbances have already taken the lead and the upper part of the indogangetic plains demonstrates the accumulation of dust. It is also likely to rain, which will improve air quality, ”he added.