Abstract
In traffic accident judgment, accident is reconstructed to investigate the cause from the state of vehicles and the situation of the scene. This is one of the inverse problems which find a cause from a result. Now, reconstruction of accident is executed by top-down technique which using estimated value by the intuition from experience of an appraiser. However, this method will be influenced by an individual appraiser's ability. So, in this research, vehicle movement is reconstructed by neural network, whole state of phenomenon is prescribed by the chain function based on simple rule, instead of top-down technique.
