Dense Fog Causes 35-40 Vehicle Pile-up on Haryana Highway in Rohtak

• A massive pile-up involving 35-40 vehicles occurred in Rohtak, Haryana, due to dense fog, injuring several and damaging vehicles.
• The worst crash happened in the Meham area, with other fog-linked collisions reported in Hisar and Rewari.
• The India Meteorological Department (IMD) had warned of dense fog in Haryana, Punjab, Chandigarh, and Uttar Pradesh for December 15-16.
• Delhi-NCR's air quality deteriorated to 'severe plus' on the same day, prompting authorities to enforce Stage IV of the Graded Response Action Plan (GRAP-IV).

Why It Matters: Dense fog causes dangerous highway pile-ups, warning of continued hazardous conditions.