All in-use vehicles in India are required to have a valid Pollution Under Control (PUC) certificate. This simple PUC checks exists from the year 1991 for all on-road vehicles as per CMV rule No 116. Privately run PUC centres authorised by the Regional Transport Authority (RTA) undertake emission check for all in-use vehicles. But even as emission norms for the new vehicles were made stringent, the government did not revise the norms for checking the emissions from the in-use fleet. Therefore, the old vehicles (which clearly would emit higher), were regulated at par with new vehicles, which should be emitting lesser emissions This issue was brought to the Hon