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

Inhwan Han

doi:10.1016/j.forsciint.2017.12.010

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

Forensic Sci Int. 2018 Feb:283:103-110. doi: 10.1016/j.forsciint.2017.12.010. Epub 2017 Dec 14.

Author

Inhwan Han¹

Affiliation

¹ Department of Mechanical and Design Engineering, Hongik University, 2639 Sejong-ro, Jochiwon, Sejong 30016, Republic of Korea. Electronic address: ihhan@hongik.ac.kr.

PMID: 29278821
DOI: 10.1016/j.forsciint.2017.12.010

Abstract

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.

Keywords: Accident reconstruction; Collision; Event data recorder; Optimization; Rigid-body impact model; Vehicle speed.