Delhi-NCR has moved to GRAP Stage II after air quality reached the very poor category, triggering measures to curb pollution. Separately, non-BS-VI petrol and diesel vehicles registered outside Delhi are barred from entering the capital until January 31, 2027. From 1 November 2026, vehicle entry into Delhi will be restricted under the revised GRAP rules. Check your vehicle type and ensure it complies with what is permitted for entry into Delhi.