of course, this will also increase mot costs as mot stations have to aquire the test equipment, because thats the only way to check these emissions, and remember that when you add an emissions test to the current mot, then you allow pc plod that one extra reason to stop your bike when he has a mind to and potentially report you or send you for a retest for your emissions, and id not be in a rush to ask the government to add more legislation to the biking worlds current stack of regs. and finally, who is going to provide the emissions figures for my 1960s triumph or my 1980s suzukis? it sounds like a great idea in practice, but im wary about asking the govt to introduce legislation that impinges on any part of my biking world.