Testing the Evidentiary Value of Police Body-Worn Cameras in Misdemeanor Court

We test whether the presence of police body-worn camera (BWC) evidence impacts case filing, processing, and outcomes, using data from over 50,000 misdemeanor cases charged in the Tempe, Arizona municipal city court (2014-2017). BWCs did not affect case flow but did affect processing and outcomes for most cases. Traffic and drug/alcohol cases involving a BWC were processed more quickly, while traffic and person offense cases with a BWC were less likely to be adjudicated guilty. Defendant and officer demographics were correlated with case processing time and outcomes, but BWCs did not reduce racial/ethnic disparities for any outcomes. BWCs appear to affect case processing and outcomes for some case types, but effects are not straightforward and warrant further research.