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A Stanford University study uncovers racial disparity in routine traffic stops.

Police searches drop dramatically in states that legalized marijuana

Traffic searches by highway patrols in Colorado and Washington dropped by nearly half after the two states legalized marijuana in 2012. That also reduced the racial disparities in the stops, according to a new analysis of police data, but not by much. Blacks and Hispanics are still searched at higher rates than whites.

Measuring racial bias in police forces

Is driving while black really an offense?

Why legal pot could dramatically cut state’s police vehicle searches

Colorado and Washington saw vehicle searches by police officers fall dramatically after legalizing marijuana — a trend that could have implications in California, where voters legalized recreational

How to cut down on searches in traffic stops: legalize pot

New data shows legalization leads to fewer encounters between cops and drivers, but racial disparities remain.

Police officers are more likely to cite black or Latino drivers than whites during traffic stops

The findings are based on a Stanford University study of 100 million traffic stops in 31 states between 2011 and 2015.

Black and Latino drivers are searched based on less evidence and are more likely to be arrested, Stanford researchers find

Stanford researchers find police require less suspicion to search Latino and black drivers; once pulled over, blacks and Latinos are more likely to be cited, searched and arrested.

Stanford study finds bias in police searches

A Stanford analysis of nationwide traffic stop-and-search records show minorities are held to a double standard and searched on the basis of less evidence.

Black and Latino drivers more likely to be cited and arrested than whites during traffic stops, study finds

Police officers are more likely to search, cite and arrest drivers who are black or Hispanic, a study finds.

New database allows Stanford researchers to find disparities in officers’ treatment of minority motorists

The Stanford Open Policing Project obtained data on millions of state patrol stops and found evidence that minorities are held to a double standard. The data are being shared with researchers, journalists and the public.