SIMON COURT (ACT): Thank you, Madam Speaker. This is a really difficult issue, because the science and the technology doesn't quite match up with our aspiration. I have three teenage boys. The eldest has his driver's licence and, like a lot of young people, has an active social life. I hope and trust that he makes the right decisions every time he gets behind the wheel, but I don't have control over him and I don't have control over what other people do on the road when I'm driving. So it's important that we have a means of deterring people from getting behind the wheel and driving while impaired. That includes not just illegal substances but also prescription medications or medications that may be misused.