The Supreme Court urged Punjab, Delhi, Uttar Pradesh, and Rajasthan governments to address stubble burning, criticizing schemes like odd-even vehicle restrictions as mere optics. With increasing AQI levels and worsening air pollution, Arvind Kejriwal-led Delhi reintroduced the odd-even system to combat air pollution, citing a 2018 study that blames 40% of PM 2.5 pollution on vehicular emissions.