Depends on what sort of vehicle your driving, but most of them are to EU regulations.
You can check them out at this website;
http://www.dieselnet.com/standards/au/
and because you wont know what the EU standards are, you can check them out here;
http://www.dieselnet.com/standards/eu/ld.php
But can't seem to find any recent emission standards on motorcycles.
Hope that helps you out anyways.
;)