Testing for Racial Profiling With the Veil-of-Darkness Method

Abstract

The “veil-of-darkness” method is an innovative and low-cost approach that circumvents many of the benchmarking issues that arise in testing for racial profiling. Changes in natural lighting are used to establish a presumptively more race-neutral benchmark on the assumption that after dark, police suffer an impaired ability to detect motorists’ race. Applying the veil-of-darkness method to vehicle stops by the Syracuse (NY) police between 2006 and 2009 and examining differences among officers assigned to specialized traffic units and crime-suppression units, we found that African Americans were no more likely to be stopped during daylight than during darkness, indicating no racial bias.