Steven M. Schorr, PE, is president of DJS Associates Inc., a full-service forensic consulting firm, in Abington, Pa. In business for more than 45 years, DJS Associates provides services to the legal, insurance and engineering/forensic communities, and government and private sectors. DJS Associates Inc.'s staff includes dual-licensed surveying/engineering professionals.
For many years, folding rulers, tape measures and black and white photography were the standard tools of the trade for collision reconstruction engineers. Armed with these tools, experts collected as much data as possible to evaluate a collision sequence. In those days, as it does today, the quality of the data collected directly affected the accuracy and the depth of the analysis.