Probability of Dying in a Bicycle Accident

Cycling fatalities have been rising in the US, with lifetime odds of dying in a bicycle accident at approximately 1 in 3,825 according to NSC data. In 2022, approximately 1,105 cyclists were killed in traffic crashes, the highest number in decades.

The vast majority of cyclist deaths result from collisions with motor vehicles, particularly at intersections and on roads without dedicated bike infrastructure. Risk factors include riding at night (especially without lights or reflective gear), riding against traffic, impaired riding, not wearing a helmet, and riding on high-speed roads without bike lanes. Men account for about 87% of cyclist fatalities.

Helmet use reduces the risk of head injury by about 50% and serious head injury by about 69%. Other safety measures include using front and rear lights, wearing visible clothing, following traffic laws, using dedicated bike lanes when available, and using hand signals. Cities investing in protected bike infrastructure see significantly lower cyclist fatality rates.