"I forgot the pollution certificate at home." "I didn't know a pollution under control certificate was required to get petrol." People in Delhi came up with varied excuses after they were denied fuel under the new anti-pollution curbs that kicked in the national capital today. In its renewed fight against the toxic air, the Delhi government rolled out several measures including a ban on entry to non-BS-VI commercial and private vehicles registered outside of Delhi and a mandate of no petrol without updated pollution under control (PUC) certificate today. This was followed by resistance and confusion at several petrol pumps and borders.