There are laws for various types of random breath testing. It's hard to be sure in how many countries. I have a document here from the World Health Organization that claims there are 121 countries that have some form of it. I'm dubious of that number. A paper was produced by Professor Chamberlain, the legal adviser to MADD Canada, who might perhaps be one of your witnesses. He listed 73 countries with a form of random breath testing; that I do know. The department's discussion paper in 2010 included a recommendation by the European Commission that random breath testing be conducted in all countries in the commission as part of an overall program to combat impaired driving. I have the laws of the seven states of Australia here. They all have purely random breath testing. I say that because there are some places, and Ireland is one of them, where they have it at a check stop. They bring the people in and they blow, but they do not have any roving police officer pulling people over. Australia has what I would call purely random breath testing. Let's just say running random breath testing checkpoints in rural Canada could be difficult.
On September 27th, 2016. See this statement in context.