From November 1, 2026, to January 31, 2027, Delhi will ban entry of non-Delhi-registered vehicles that do not meet BS6 emission norms as part of its winter pollution-control plan. Border enforcement is being strengthened after police registered three cases over allegedly forged commercial vehicle entry permits during an October 27 drive. The Delhi Traffic Police will enforce revised vehicle entry rules from November 1, 2026, under GRAP to tackle air pollution.