A Black Box Study of the Accuracy and Reproducibility of Tire Evidence Examiners' Conclusions, 2022-2023 (ICPSR 39084)
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William Chapman, Noblis
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Tire impression evidence can be a valuable tool during a crime scene investigation - it can link vehicles to scenes or secondary locations, and reveal information about the series of events surrounding a crime. The interpretation of tire impression evidence relies on the expertise of forensic tire examiners; however, until this study was conducted there had not been any published research empirically evaluating the decisions reported by practicing forensic tire examiners. This study constitutes the first formal black box study of tire impression evidence examiners; the results are an empirical evaluation of the accuracy and reproducibility of 238 tire comparison decisions reported by 17 examiners. The results of this study provide key information about the practice of tire impression examination to laboratory managers, practitioners, and the legal system that can help to facilitate improvements in standardization, training, and practice.