Abstract
Thirty selected traffic accidents were investigated in depth by a multidisciplinary team. Human, environmental, and vehicular factors relating to cause were investigated and summarized in each case report. Human failure. frequently combined with the use of alcohol, was the most important single causative factor. Defect in design or functions of the vehicle and environmental factors were also important in a significant number of cases based on measurements of severity of human injuries and vehicle damage. See A 9277 – A 9280, A 5937, A 7479, A 9297, and A 9295.