@Logicfest -- And you also have a point, but consider that the most dangerous municipal ordinances are often posted but are done so in a sneaky way and paired to state law to criminalize conduct.
Here is what I mean. I know a town that, like most cities, sets speed limits on its streets. There is one section of road where the speed limit goes from 35 MPH to 15 MPH without skipping a beat. And who is hiding behind the trees near that lower speed limit side?
That's right. A police officer ready to write a ticket to anyone caught speeding. So, we have a local ordinance (in effect) that is tied to a state law (speeding) and is clearly unfair.
Hey, I don't blame the officer for doing his job. But I do think that is a jerky move on the part of the town that manufactured a way to generate more city revenue.