The Graded Response Action Plan (GRAP) will be implemented in Delhi-NCR to combat air pollution. The plan includes measures such as restrictions on overaged vehicles, a ban on coal and firewood in eateries, and the banning of certain vehicles when the Air Quality Index (AQI) reaches a certain level. The plan has been revised to ensure proactive implementation based on forecasts. The GRAP is classified into four stages based on the severity of air quality, and each stage has specific actions to be taken. Existing measures will continue alongside the new changes.