Samenvatting
Procedures and techniques developed in conjunction with a Tri-level accident investigation program are summarized. The three levels of the tri-level program are described. The three levels of this investigation methodology are first, the collection of baseline information on the vehicle, driver, and roadway / environmental populations; second, the on-site investigation by technicians at the time of their occurrence; and third the independent investigation of a sample of these accidents by a multi disciplinary team.