The World Health Organization has a message for those who are still not using motorcycle helmets.
Each year about 1.2 million people die as a result of road traffic crashes, and millions more are injured or disabled. Most of the deaths are preventable.
Head injuries are the main cause of death and disability among motorcycle users, and the costs of head injuries are high because they frequently require specialized medical care or long-term rehabilitation.
Wearing a helmet is the single most effective way of reducing head injuries and fatalities resulting from motorcycle and bicycle crashes. Wearing a helmet has been shown to decrease the risk and severity of injuries among motorcyclists by about 70%, the likelihood of death by almost 40%, and to substantially reduce the costs of health care associated with such crashes.