Statistical analysis of vehicle rollover propensity and vehicle stability.

This report summarises the accident-data collection, processing, and analysis methodology used by the National Highway Traffic Safety Administration (NHTSA) in a major Agency investigation of the rollover propensity of light-duty vehicles. Specifically, these efforts were initiated in response to two petitions for rulemaking requesting the development of a standard for rollover stability. Logistic regression models were used to investigate the ability of a number of stability measures to predict vehicle rollover propensity, while accounting for a number of driver and environmental factors. (A)