Methodology for Reconciliation of Different Forms of Electronic Data in Vehicle Collision Reconstruction

Abstract

Collision analysis utilizing electronic data recorders, videos, traffic signal timing data, and other electronic records adds valuable input but can be a challenge to tie together due to the lack of a finite time stamp or common recording rate. However, overlapping data streams that have a common point-in-time identifier can be resolved. A strategic approach was developed by the author for unifying and validating the vehicle positions and time-distance reconstruction. The method outlines the steps for establishing known data points, forming a common time line, identifying overlapping information, and linking together independent records. A case study demonstrates a crash at a traffic signal-controlled intersection in which each vehicle entered on their respective green lights without conflict; however, the collision still occurred. The crash reconstruction will highlight driver options and demonstrate the value of combining multiple data streams into one time line.