Scott that applies to USA,
Every country has their own standard. I think called Compliance.
I think he means , if you have it, it is easy to register, But if they never imported that model to Italy, they may have never been approved.
I have seen on some bikes in Canada, a round ? Sticker . White reflective background, with I think an outline of a Maple Leaf and some letters and numbers.. all in black against the white background.