A superseding cause is a later event that breaks the chain between someone's original mistake and the final injury, shifting legal responsibility because the later event became the real cause of the harm.

In plain terms, not every bad act stays on the hook forever. If Driver A causes a minor crash, but then a completely separate, unexpected act makes the injury much worse, that later act may cut off Driver A's liability. Example: a stalled vehicle after a wreck is one thing; a third party racing through the scene at high speed and causing a second, far more serious impact may be argued as a superseding cause. The big question is whether the later event was foreseeable. If it was the kind of thing that could normally happen after the first mistake, it usually will not break the chain.

For an injury claim, this can decide who pays and how much. Insurance companies and defense lawyers use it to argue that their driver, property owner, or employer should not be blamed for injuries caused by a separate later event. In Arkansas, this comes up through proximate cause and intervening cause rules under state common law, often reflected in Arkansas Model Jury Instructions on causation. In a commuter-heavy area near Bentonville, for example, a pileup may involve several acts close together. Preserve photos, video, witness names, and timing evidence fast, because the timeline often decides whether a later event was truly superseding or just part of the original danger.