Are cycle helmet standards protecting children in vehicle collisions? Evidence from real-world injury patterns
Children’s cycle helmets are currently certified using the same impact conditions as adult helmets, which overlooks key differences in their injury physiology, tolerance, and mechanisms. Despite these differences, there lacks cohesive data for the causes of prevalent and severe head injuries in child cyclists. Such data is necessary to inform representative helmet test procedures that ensure designs are fit for purpose.
This study reviewed clinical literature and analysed 48,074 head injury cases in cyclists under 17 years to extract recurring patterns in injury details, helmet efficacy, demographics and environmental causal factors. The reearchers found that 75% of injuries occurred on paved roads, and ages as young as five were at significant risk. Falls from bicycles were the most prevalent injury mechanism, though collisions with motor vehicles constituted a disproportionate share (46.2%) of severe injuries. Moreover, child helmets are much less effective at reducing severe injuries in these scenarios than adult helmets.
These results highlight a critical need for helmet test methods that accurately represent the conditions of severe head injury in child cyclists. By identifying these patterns, the presentation provides a foundation to simulate representative injury conditions in further biomechanical analyses. This permits the objective rating of helmet performance under conditions that represent real-world incidents to force design improvements. Ultimately, this will reduce injury and fatality risk in child vulnerable road users, thus contributing towards Vision Zero.
Dr William Dawber, Imperial College London
Dr William Dawber is a researcher in Brain Biomechanics at Imperial College London, specialising in the mechanics of child head injuries. His work is funded by the Road Safety Trust to reduce severe and fatal injuries in child cyclists by working directly with standards and manufacturers to improve test methods and product safety.
His goal is to work with road safety professionals to link evidence and help reduce fatalities in child vulnerable road users.