I very well believe this could be true. However, after hearing of many studies that don’t get published unless they confirm the suspicion of racial prejudice I don’t even know what to believe anymore. Side effect of a post-truth society locked in endless red-blue proxy fights I guess.
I don’t know why we need police doing traffic enforcement. The cars know how fast they are going, the cars know where they are, the cars know what the speed limit is, why are they able to speed? Enforcement should be fully automated and violations should be forced to provide evidence of a special situation id they do speed eg: in labor etc. or a ticket is automatically issued.
Also in favor of governors on max acceleration and relative force generation for large heavy vehicles. Eg: 9k lb electric truck can do 0-60 in a minimum of 8seconds.