Optimization analysis in reconstruction of vehicle collision accidents with deficient EDR data.

This paper presents an efficient method of estimating preimpact and postimpact speeds of the vehicle without an EDR using only the velocity data obtained from a vehicle with an EDR. Using a large amount of data from vehicle collision experiments conducted in various settings, the limitations of collision models involved in optimization methods utilized in this study were found. The practicality of the proposed velocity estimation method was verified by referencing data from vehicle collision accident cases in Korea and America. Not only was the accuracy of the method verified, but the results also showed that the proposed method was applicable even when the EDR data was partially lost.