Delhi will bar entry of non-BS6 vehicles registered outside the capital from November 1, 2026, to January 31, 2027, as part of its winter pollution plan. Over 10 lakh vehicles in Gurgaon, Faridabad, Noida, Greater Noida and Ghaziabad could be affected. CNG and electric vehicles are exempt. ANPR cameras and 300 enforcement personnel will police entry points.