Speed has a direct effect on both the likelihood of a crash and the severity of the injuries that result. As speed increases, reaction time decreases and stopping distances grow longer, making it more difficult to avoid hazards. When a collision occurs, the force of impact rises significantly with higher speeds, which often leads to more serious injuries. Even a modest increase in speed can change the outcome of an accident. Maintaining a reasonable and controlled speed gives you more time to respond to changing conditions and reduces the overall risk of severe harm.