The general objectives of the study were to determine the nature and causes of single vehicle accidents, describe their resulting consequences, and develop recommendations to effect a reduction in the frequency and severity of these accidents. Analyses were based on in-depth investigations of 609 single vehicle accidents in Dade County, Florida, and police reported data on all County accidents during the study period. Comparisons of single vehicle and non-single vehicle accident characteristics were made as well as comparisons involving fatal and alcohol involved single vehicle accidents. Causal factors for accident causation and injury production were identified and certain quantitative models developed. The models include consideration of the effectiveness of breakaway light standards and energy absorbing devices, the redirection capabilities of curbs, roadway departure characteristics, and speed relationships. The analyses were used to develop and support countermeasure recommendations.
Abstract