India, Dec. 25 -- Yes, you can now drive your BS4 petrol vehicle in Delhi and the wider NCR. Following an improvement in air quality, the Commission for Air Quality Management (CAQM) has revoked all restrictions under GRAP Stage IV with immediate effect. The decision was taken after Delhi's Air Quality Index (AQI) showed a sharp improvement, dropping to 271, which falls in the 'Poor' category, aided by favourable weather conditions such as higher wind speeds.

GRAP Stage IV was imposed on December 13 after Delhi's AQI crossed the 450 mark, triggering the strictest set of curbs under the Graded Response Action Plan. With Stage IV now lifted across the entire NCR, some of the most disruptive measures, including bans on certain categories of...