Seems to me "regulations" are very messy territory, here in the US of A. The Feds say one thing, then the states will say something completely different and ultimately local government will have a completely different third interpretation. It all feels like a very gray area that seldom has any sort of consistency till someone's decision is challenged as "unconctitutional" through the court systems. And even that doesn't really help much...

Bright Blessings!