Delhi Raises Pollution Alert To Highest Level, Bans Trucks, Construction

The Graded Response Action Plan or GRAP are set of measures drafted by the Centre's Commission for Air Quality Management (CAQM) to tackle air pollution.

The Centre has implemented stage-IV measures of the Graded Response Action Plan (GRAP) with immediate effect as the air quality in the national capital and its neighbouring cities remains in the 'severe plus' category for the fourth consecutive day.

The Graded Response Action Plan or GRAP are set of measures drafted by the Centre's Commission for Air Quality Management (CAQM) to tackle air pollution. 

The Stage IV of the GRAP is the highest level of pollution alert taken under the GRAP when the Air Quality Index (AQI) remains over 450 or in the 'severe plus' category.