Pennsylvania State Police Traffic Stop Study

The 2024 Annual Report of the Pennsylvania State Police (PSP) Traffic Stop Study presents a comprehensive analysis of member-initiated traffic stops conducted between January 1 and December 31, 2024. It continues a multi-year initiative to collect, audit, and analyze traffic stop data. In 2021, the Pennsylvania State Police (PSP) revitalized its effort to collect traffic stop data This initiative builds on a voluntary traffic stop data collection system created by the PSP twenty-five years ago in partnership with the current research team, which was operational from 2001 to 2010 and served as a national model for traffic stop data collection (Engel & Cherkauskas, 2022). The report provides a detailed breakdown of traffic stop characteristics and outcomes at the department level, as well as across PSP’s four Areas, 16 Troops, and 89 Stations. PSP’s voluntary data collection and analysis align with best practices, showcasing its commitment to transparency and accountability to its communities and reinforcing its dedication to evidence-based policing practices. The objectives of the traffic stop data collection and analysis are to: (1) identify patterns and trends in traffic stops and their outcomes, specifically documenting any racial/ethnic disparities; (2) utilize data analysis to promote effective and fair law enforcement practices that enhance public and traffic safety; (3) foster public trust through transparent documentation of traffic stop data and findings; (4) identify opportunities for improvement in PSP policies, training, and supervisory oversight concerning traffic stops.