Yes, thank you.
If you find the paper that we submitted, annex 1 looks at international experience with RBT. I won't run through it other than to give you some examples.
It was introduced in Ireland in July 2006. It was credited with reducing the number of people killed on Irish roads by almost a quarter, 23%. It was introduced in New Zealand in 1993, admittedly with such other things as 0.05, and there was a 22% increase...or decrease, I should say; geez, an increase would be a disaster.
So there's a good deal of evidence on the side of the public safety benefit for which we have to balance the public inconvenience of having to provide a breath sample. But there is evidence of that.