Putting all uncertainties to rest over the registration of BS-III vehicles after April 1, the road transport ministry has said only manufacturing of such vehicles are not allowed after March end. The inventory of old (manufactured) vehicles, however, "needs to be protected and registered". The ministry has framed its stand on the issues raised by the Supreme Court appointed body, EPCA, which wants to put a stop to registration of vehicles which don't comply with BS-IV emission norms from March 31, linking pollution under control certificates with the annual vehicular insurance to curb air pollution. The road transport ministry has shared its stand with heavy industries ministry and has asked it to submit its stand in the Supreme Court. Citing past examples, the transport ministry has said the same norm of allowing vehicles to be registered was followed when migration to BS-II and BS-III happened in 2001 and 2005. EPCA has reached out to state governments requesting them not to register any BS-III vehicle, which has caused huge concern to some of the heavy vehicle manufacturers since they have some quantity of inventory.