Authorities stopped and checked 81,340 vehicles, and at least 18, 044 non-CNG and non-electric vehicles not registered in Delhi were turned back from the city’s borders during the first 10 days of. Private cars accounted for the highest number of challans among vehicles violating the non-BS-VI emission-related curbs. To curb air pollution, the Delhi government has imposed restrictions, including a ban on non-Delhi vehicles below BS-VI emission standards till 31, 2027.