We've carefully designed a legislative regime around that, that ensures that there is fairness built into the system. People who are asked to be tested by a police officer will initially be asked to conduct an oral fluid test. If that results in a positive outcome, a second test will be undertaken, and it will only be if the two tests both return a positive result that an infringement offence will have been committed and a ticket issued. And that's an important point to make: that, at that point, it's only an infringement offence. A criminal offence can only occur if a subsequent blood test is undertaken and that a higher limit that is set out in the legislation is reached through that blood testing process. 