A systematic process of evaluating the evidences obtained from vehicle and crash scene examination, as well as data from victim/witness interviews, and applying accepted physical principles and laws, to determine the collision sequence, calculate vehicle speeds, and ascertain the causes for the crash occurrence.
Reconstruction requires good quality crash data collection. Like solving a jigsaw puzzle, JPRI Crash Reconstructionists put together the crash data and the evidence collected, and determine the crash sequence by employing physics and mechanics calculations. JPRI Crash Reconstructionists also use an accident reconstruction software, PC-Crash, for creating for 3D simulations (not animations) for a better understanding and visualization of crashes.