What effect does wearing a helmet have in a crash, regardless of speed?

Wearing a helmet has a significant protective effect during a crash, regardless of the speed at which the crash occurs. The primary function of a helmet is to absorb and dissipate the impact energy that would otherwise be transferred to the rider's head in the event of an accident. This level of protection substantially reduces the likelihood of sustaining severe head injuries, such as skull fractures or traumatic brain injuries.

By cushioning the head upon impact and providing a barrier between the head and any hard surfaces, helmets play a crucial role in safeguarding riders. This is especially vital since head injuries are among the most serious and potentially life-threatening types of injuries that can occur in motorcycle accidents.

Therefore, the emphasis on reducing the chance of a fatal head injury outlines the helmet's importance as a safety device for riders, making it clear that a helmet is an essential piece of gear when it comes to rider safety.