law should be wrtten in such a sense that it is not ambiguous. 30mph means thats a max, not if there no one else on the road i can choose to ignore.
a standard test would give a real chance for owners, dealers, police etc. with no standardisation, can the tester move the grub srew in the port? alter the preload on the hammer spring? the answer without std test is yes they can, no wrtten proceedure to say they cant. capable? thats a word written into law.
i'm not perfect, but I shoot FT, reality is this is pretty much the same thing!