Trends in the Static Stability Factor of Passenger Cars, Light Trucks, and Vans
DOT HS 809 868 June 2005 NHTSA Technical Report Trends in the Static Stability Factor of Passenger Cars, Light Trucks, and Vans This document is available to the public from the National Technical Information Service, Springfield, Virginia 22161 The United States Government does not endorse products or manufacturers. Trade or manufacturers’ names appear only because they are considered essential to the object of this report. Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient’s Catalog No. DOT HS 809 868 4. Title and Subtitle 5. Report Date June 2005 Trends in the Static Stability Factor of Passenger Cars, Light Trucks, and Vans 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Marie C. Walz 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) Office of Regulatory Analysis and Evaluation Planning, Evaluation and Budget 11. Contract or Grant No. National Highway Traffic Safety Administration Washington, DC 20590 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Department of Transportation NHTSA Technical Report National Highway Traffic Safety Administration 14. Sponsoring Agency Code Washington, DC 20590 15. Supplementary Notes 16. Abstract Rollover crashes kill more than 10,000 occupants of passenger vehicles each year. As part of its mission to reduce fatalities and injuries, since model year 2001 NHTSA has included rollover information as part of its NCAP ratings. One of the primary means of assessing rollover risk is the static stability factor (SSF), a measurement of a vehicle’s resistance to rollover. The higher the SSF, the lower the rollover risk.
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