India, Jan. 27 -- The Supreme Court on Monday made colour-coded stickers mandatory for issuance of various documents such as pollution under control (PUC) certificates, transfer of vehicle ownership, and duplicate registration, among others, for vehicles plying in Delhi and National Capital Region (NCR) as part of its mammoth push to rid Delhi of pollution.

Passing a slew of orders on a public interest litigation (PIL) filed by lawyer and activist MC Mehta, seeking steps to curb pollution in Delhi, a bench headed by justice Abhay S Oka noted that though this rule was enforced in Delhi-NCR from April 1, 2019, hardly 30% vehicles registered prior to that date had the colour coded stickers.

The order of the court mandated blue hologram-bas...