GRAP Stage 4 entails ban on diesel-run medium, heavy goods vehicles registered in Delhi (BS-IV or below), except those carrying essentials.

Delhi NCR is facing severe air pollution, prompting the Commission for Air Quality Management to enforce GRAP Stage 4. The stringent measures include banning truck entry (except essential goods), halting construction activities,

According to the System of Air Quality and Weather Forecasting and Research (SAFAR), the city's overall Air Quality Index (AQI) was worsened to a 'severe-plus 468, triggering grave health concerns.

Delhi's air quality remained "severe" for a second consecutive day, prompting the central pollution watchdog to invoke restrictions under the third stage of GRAP, including a ban on construction activ

Delhi NCR is implementing GRAP Stage 3 due to severe air quality, halting non-essential construction and restricting vehicle use. The region's AQI has reached hazardous levels, prompting authorities to enforce stricter measures like banning certain vehicles and limiting construction activities to combat pollution.

The GRAP 3 curbs in Delhi include ban on demolition and construction activities, and entry of certain vehicles inside Delhi-NCR, among other curbs, to prevent further deterioration of air quality.