Delhi will restrict the entry of non-BS6 vehicles registered outside the capital from November 1 to January 31 as part of its winter pollution control measures, potentially affecting over 10 lakh vehicles across neighbouring NCR cities. Delhi will bar non-BS6 vehicles registered outside the capital from entering between November 1, 2026, and January 31, 2027.More than 10 lakh vehicles across Gurgaon, Faridabad, Noida, Greater Noida and Ghaziabad could be affected.