This study was commissioned by the NJ Attorney General. Was a couple decades ago but anecdotally, when I get passed on I-95, it's in large majority by a young black guy. So the behavior is likely still the same.
Link: https://www.manhattan-institute.org/html/profiling-myth-smashed-1513.html#:~:text=According%20to%20a%20new%20study,the%20myth%20of%20racial%20profiling.