After almost two years of work, my colleagues and I have launched the Stanford Open Policing Project! Records from 130 million traffic stops in 31 states are now public for anyone to analyze. The site also contains analyses we’ve conducted, and tutorials on how to conduct your own.

Huge thanks to Emma Pierson, Jan Overgoor, Camelia Simoiu, Vignesh Ramachandran, Cheryl Phillips, and Sharad Goel for all the work they put in.