Is it time to take the police out of traffic stops?

Traffic stops are the most common way Americans interact with the police. The Brooklyn Center, Minn., police killing of Daunte Wright, a 20-year-old Black man who was shot by an officer who allegedly confused her gun for her Taser while attempting to arrest him, is the latest reminder of how these interactions can quickly turn deadly.

Police conduct roughly 20 million traffic stops a year, according to data from the Stanford Open Policing Project. Though the majority end without major incident, they occasionally result in officers using deadly force. Last...