United States Department of Transportation
i
Traffic Safety Facts: Overview of the 2021 Crash Investigation Sampling System
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2022-12-01
[PDF-564.15 KB]
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Edition:Traffic Safety Facts
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Abstract:This research note examines data from the newly-modernized Crash Investigation Sampling System (CISS) for 2021. The data shows that there were an estimated 2,698,338 police-reported motor vehicle crashes nationwide where at least one passenger vehicle (i.e., passenger car, light truck or van 10,000 lbs or less) was towed from the crash scene, which resulted in an estimated 1,052,099 injured occupants of in-transport towed passenger vehicles. Among these crashes, 2.4 percent (64,386) were crashes with highest injury levels of serious or above, 18.5 percent (498,767) were crashes with moderate or minor injury levels, and 59.3 percent (1,599,291) were crashes with no injury. In 2021 CISS selected 3,806 police-reported crashes. Of the 3,806 selected crashes, 3,331 were eligible for investigation.
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