The Columbia Police Department released its traffic stop data for 2018 which show once again that black drivers are more likely to be pulled over than would be expected at random based on their percentage of the population. All other identified races were underrepresented in traffic stop data compared to their percentage of the population.
The racial disparity index is a number that represents the percentage of traffic stops involving people of a given race to their percentage of the population. A number of more than one indicates that the group is over-represented. The data for last year’s traffic stops in Columbia shows a racial disparity index of 2.92 for black drivers. White drivers were underrepresented with a racial disparity index of .80.