In a crash seat belts ride down?

In a crash, seat belts are designed to restrain passengers and prevent them from being thrown forward or ejected from the vehicle. During a collision, the belts tighten and may slide down slightly as they absorb the impact force, distributing it across the strong parts of the body. This movement helps reduce the risk of injury by keeping occupants securely in their seats. Properly adjusted seat belts should fit snugly across the lap and shoulder to maximize safety.