Cops hide out by mounds of hills produced through the construction of new sub divisions near where the air port was. The speed limit is reduced in the construction area where no one lives. But if you keep going down school house the speed limit goes up 10mph when you get into a subdivision. Cops love this one because they are well hidden and people coming a from subdivision do not expect speed limits to get lowered for an area surrounded by field and no complete houses. This is where cops have a field day on the citizens.