Analysis of the human and environmental aspects associated with accidental injuries and risk avoidance. Human aspects consist of risk-free and risky ways of thinking or conduct, pertinent character and physiological factors, and stress and anxiety factors. Environmental aspects consist of secure road design, risk-free working environments, prevention of overcrowding, redesign of signage, noise abatement, and utilization of car seat belts, as well as better configuration of kitchen areas and restrooms. See also: accident proneness.