An anti-roll bar, also known as a sway bar, is a component in a vehicle's suspension system designed to reduce body roll during cornering. It connects the left and right wheels, helping to distribute weight evenly and maintain stability. This improves handling and allows for a smoother ride, especially in turns. When a vehicle turns, the anti-roll bar works by twisting to counteract the forces that cause the body to lean. This helps keep the tires in better contact with the road, enhancing traction and safety. Properly functioning anti-roll bars are essential for performance in both everyday driving and competitive racing scenarios.