I'm glad to see another take on the data. I'm also relieved to see that our results are along the same lines! :)<p>You say that "Red light violations" are automated. That didn't even cross my mind! I just assumed that they were manually issued without even thinking about it. I think it'd make more sense that it would be referring to automated red-light cameras, but are you basing that on anything or did you just make the opposite assumption?<p>I'd also just like to point out that I made an update yesterday with some more conventional statistics (standard deviation, Z-scores) and new weights accounting for days of the week.<p><a href="http://robert.io/posts/4.html#updates" rel="nofollow">http://robert.io/posts/4.html#updates</a>