This story begins with residents who adopt a parochial not-in-my-backyard view of speed limits. They complain incessantly to their elected local politicians that, in their view, motor vehicles travel too fast on their local streets, and they demand action.
Political pandering being what it is, the local politicians look to their civil servants in the DPW and police to satisfy their constituents’ demands. As they see it, the problem is that the statutory speed limit on unmarked local roads is either set too high or generally ignored by motorists (ironically many of which are also residents). Together, they decide that the DPW should post lower speed limits, which in turn the police should strictly enforce. This plan of action placates the constituents.