Dr. Charles Jennissen, of the University of Iowa Department of Emergency Medicine presented this at CPSC's ATV Safety Summit Oct. 11, 2012. The study objective was to better understand the relationship between speed and ATV crash-related head injuries. Methods: A retrospective chart review was performed of ATV-related injuries from 2002-2009 at a university hospital. Results: 345 cases were identified; 30% were children <16>s ATVs are likely contributing to more serious injuries, including more severe head injuries. Although helmets are protective, there may be ATV crash speeds or mechanisms of brain injury at higher speeds that reduce helmet effectiveness. All ATVs should have a code-protected, tamper-proof speed governor. This would particularly assist parents in protecting children and teens from the serious risks associated with high operating speeds.