Professor Ross’s work with former students Jesse Kalinowski (Quinnipiac) and Matt Ross (NYU) was published in the 2019 American Economic Association Papers and Proceedings.
In this paper, they document that police change where they patrol and the types of infractions that they monitor when darkness falls. This behavior has important implications for attempts to test for racial profiling in traffic stops where often stops at night when race cannot be observed are used as a benchmark to determining whether police disproportionately stop minority motorists during the day (non-gated link to working paper below).