it would not take too many tickets before that stretch of highway started to flow at the posted speed Actually, it would have to flow quite a bit below the pos

it would not take too many tickets before that stretch of highway started to flow at the posted speed Actually, it would have to flow quite a bit below the posted speed to be sure you didn't accidentally go above and get a ticket. An officer would probably decide that that was not a serious enough violation to warrant a ticket, but an automated system has no such discretion. I haven't seen any statistics on whether automated speed enforcement actually lowers the accident rate. It seems perfectly plausible to me that it would be counterproductive, because getting rid of the small number of seriously unsafe speeders would be counterbalanced by the fact that people in general will be much more paranoid about their speed and direct more attention to that to the detriment of paying attention to more important things like what's happening down the road.