Correct. It is nearly impossible today for any citizen to be aware of all laws. Thus, you are likely to be violating them left and right. Example. My in-laws village near NW side of Chicago - you cannot park a pickup or large SUV on the street overnight. Nowhere is that posted, but it is part of the village laws. The cops prowl the streets overnight and ticket all such vehicles. Even those with out of state plates - clearly those who might not know of such a law. No warning, a ticket outright. Try to fight it? They say that the people you are visiting should have told you. What nonsense.