Solution 1: Expanding Road Infrastructure One proposed solution to traffic congestion is expanding road infrastructure by building new highways, widening existing roads, or constructing overpasses and tunnels.Increased Capacity - Expanding roads allows more vehicles to move efficiently, reducing bottlenecks and easing congestion.Improved Traffic Flow - Wider roads and additional lanes can reduce travel time, benefiting commuters and businesses that rely on transportation.Advantages: 1.Disadvantages: 1.2.3.2.