India, Dec. 20 -- A day after the enforcement of BS-VI compliance and mandatory pollution-under-control certificates at Delhi's border points and petrol pumps, awareness among commuters appeared to have increased on Friday, with many people voluntarily producing documents before refuelling.

Nischal Singhania, president of the Delhi Petrol Dealers' Association, said that queues at pollution-under-control (PUC) certification centres remained unchanged, while fuel sales had taken a hit in some border areas.

"Earlier, there was uncertainty about how long the 'No PUC, No Fuel' rule would continue. Now, it is clear that it will remain in force till GRAP-IV is in place. Sales have dipped in border areas. Pump owners in Badarpur reported a declin...