India, Dec. 18 -- Stricter curbs to combat air pollution in Delhi are kicking in today after the city's air quality index (AQI) plunged into the 'severe' category this week.

The curbs, announced by the Delhi government, include shifting offices to a hybrid mode, a ban on entry for certain vehicles, and a mandatory PUC certificate. The fresh measures are in addition to the GRAP-4 restrictions announced by the Commission for Air Quality Management CAQM) after the city registered AQI in the 'severe' category for three consecutive days since Saturday, December 13.

The Supreme Court on Wednesday rapped CAQM for the measures taken so far to combat pollution, calling for a comprehensive strategy to address the crisis.

Hybrid model for offices...