May 21, 2024

Bicycle helmets are 85-88 percent effective in mitigating head and brain injuries, making the use of helmets the single most effective way to reduce head injuries and fatalities resulting from bicycle crashes. Despite the fact that 70 to 80 percent of all fatal bicycle crashes involve head injuries, only 18 percent of all bicyclists wear bicycle helmets.

- U.S. Department of Transportation: Federal Highway Administration (June 16, 2023)