Order of the National Green Tribunal (Southern Zone, Chennai) in the matter of Lawyers’ Environmental Awareness Forum (LEAF) Vs Government of Kerala & Others dated 06/01/2020 regarding air pollution especially vehicular pollution in Kerala. There was no policy formulation on the issue of curbing the use of diesel vehicles which are more than ten years old in the state, the application stated.

Order of the Supreme Court of India in the matter of M. C. Mehta Vs Union of India & Others dated 04/11/2019 regarding pollution in Delhi and NCR region especially compounded by stubble burning.

Apex Court comes down heavily on the authorities saying "in spite of various directions issued by High Court, other authorities including this Court the State Governments, Government of NCT of Delhi and the corporations of Delhi and nearby States are not performing their duties as enjoined upon them."

Order of the National Green Tribunal in the matter of Justice A. K. Roopanwal (Retd.) & Others Vs State of Uttar Pradesh & Others dated 22/10/2019 regarding Presidium School and Indirapuram Habitat Centre using diesel generator sets creating air and noise pollution at Indirapuram, Ghaziabad in violation of the Air (Prevention and Control of Pollution) Act, 1981. Diesel was being stored in painting drums in open which was life threatening.

Order of the Supreme Court of India in the matter of M. C. Mehta Vs Union of India & Others dated 13/09/2019 regarding measures to control air pollution in Delhi.

Order of the Supreme Court of India in the matter of M. C. Mehta Vs Union of India & Others dated 02/08/2019 regarding registration of new taxis in Delhi, only if the vehicles operate on dual fuel or petrol or CNG. The Apex Court makes it clear, that it's order of 10/05/2016 that new taxis in NCR would be given permit only if the vehicle operate on duel fuel or petrol or CNG. Further, no vehicle shall be registered as a city taxi if it runs on diesel fuel.