When the speed limit is over 50, isn't the zero-point range 10 mph over the posted limit (i.e., 64 in a 55 is zero points)? I wonder what the rationale would be for reducing a higher speed all the way down to 59 -- a speed that, if taken at face value, just makes the officer seem petty. If Zeke was in the high 60s, giving him a break to 64 would not be substantially worse than 59, would it?
My police-officer relative tells me that his department has specified a "real" speed limit for all of the major routes in the city that is different from the posted limit (there's a four-lane 35-mph street where they aren't supposed to pull over people going below 46mph, for example). It doesn't seem likely that 59 would be in the "pull over" range on 670 (I used to drive that segment of 670 a couple times a week at 60-ish mph and was never pulled over). Maybe a construction zone is another story, but the construction zones on 670 seemed to usually be marked 45 mph.