Commission for Air Quality Management in the National Capital Region and adjoining areas (CAQM), which enforces GRAP, issued an order dated Sept 17 outlining modifications to GRAP ahead of winter. Under stage III of GRAP, when the AQI exceeds 400, inter-state buses from NCR states — except electric vehicles, CNG vehicles, or BS-VI diesel buses — will be prohibited from entering Delhi (with exceptions for buses or tempo travelers operating under an All India Tourist Permit).
Previously, there were no restrictions on the movement of LCVs and Medium Goods Vehicles (MGVs) during stage III of GRAP. These vehicles were only restricted under stage IV, when air quality reached 'severe plus' levels with an AQI above 450.
Additionally, under stage II of GRAP, when air quality falls into the 'very poor' category, there will be no restrictions on diesel-generator (DG) sets of 62kVA to less than 800kVA operating on dual-fuel mode.
Restrictive actions under stages II, III, and IV of GRAP will be enforced at least three days before the AQI is projected to reach the respective levels, based on forecasts from Indian Institute of Tropical Meteorology IMD.
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