Nonmotorist Crashes in the 2024 Crash Investigation Sampling System [Traffic Safety Facts]

In 2024 NHTSA began upgrading the Crash Investigation Sampling System (CISS) with provisions in the Infrastructure Investment and Jobs Act (IIJA), which said “to enhance the collection of crash data by upgrading the [CISS] to include – 1) additional data collection sites; 2) an expanded scope that includes all crash types; and 3) on-scene investigation protocols.” NHTSA increased the data collection sites from 32 to 40 in the 2024 CISS. NHTSA also expanded it to include nonmotorist crashes defined as police-reported crashes that involve a nonmotorist who sustained a police-reported injury severity of killed, incapacitating injury, or non-incapacitating injury.