Factors Involved in Fatal Vehicle Crashes

TLDR: This report examines factors that contribute to fatal crashes involving a motor vehicle (e.g., car, truck, or bus) and concludes that single-vehicle crash fatalities are the most prevalent and road characteristics, vehicle speed, and road type are the main factors involved.

Abstract: For every vehicle crash, there are numerous factors contributing to its severity. In 2008, 37,261 people were killed in an estimated 5.81 million police-reported motor vehicle crashes. While fatal crashes are not the most prevalent, they are the most consequential from a safety standpoint, making it vital to understand factors common to fatal incidents. This report examines factors that contribute to fatal crashes involving a motor vehicle (e.g., car, truck, or bus). Accident level data was obtained from the National Highway Traffic Safety Administration’s (NHTSA’s) Fatality Analysis Reporting System (FARS) database for 2004–20083. Analysis of the FARS database shows: 1) Single-vehicle crash fatalities are the most prevalent. 2) The main factors in single-vehicle fatal crashes involve the functionality of traffic controls and the first harmful event in a crash (e.g., rollover, traffic barrier, or ditch). 3) With regard to two-vehicle fatal crashes, main factors are traffic controls and the characteristics of the roadway (e.g., roadway alignment or surface type). 4) In multi-vehicle (three or more) fatal crashes, road characteristics, vehicle speed, and road type (e.g., interstate or country road) are the main factors involved.