Goa, Dec. 14 -- Dense fog and poor visibility triggered multiple major road accidents across Haryana early Sunday, leading to massive vehicle pile-ups involving buses, trucks and cars in Rohtak, Hisar and Rewari.The worst mishap occurred in Rohtak's Meham area, where around 35 to 40 vehicles, mostly heavy trucks, collided near a highway intersection after a truck rammed into a car, setting off a chain reaction in the fog. Several people were injured and taken to nearby hospitals as police and district teams carried out rescue operations.Similar accidents were reported from Hisar and Rewari, where low visibility caused multi-vehicle collisions, injuring several commuters. Haryana continues to reel under a severe cold wave, with dense fog h...