Either the car is street legal or not, we don't need to give cops even more power to pull people over and/or ticket them. This is an unreasonable burden for a person.

Not it is not. Driver's licenses are valid in the entire country, the rules of the road should be the same everywhere.

NY requires each intersections that aren't Right on Red to be posted at the light. So you know on a turn by turn basis if you're allowed or not. A noise ordinance isn't.

In larger areas sure. Knowing those things is reasonable. But if you're crossing 15 different little municipalities is it reasonable to expect people to look up all the local laws for each of them?