My a & b weren't intended to be ranked though clumsy phrasing did suggest it. The situation is contested & difficult in Australia, because so much of the data c

My a & b weren't intended to be ranked though clumsy phrasing did suggest it. The situation is contested & difficult in Australia, because so much of the data comes from our traffic cops, who are poorly trained in crash investigation by international standards. I don't have refs handy, but I've seen widely disparate stats here - official (police-derived) ones generally put more of the 'blame' on motorcyclists than do university studies. I actually did a course at Queensland uni on traffic accidents many years ago, and it was a minefield of unreliable data and motivated interpretation. I've no idea whether NZ is better or worse in that respect. In any case, whether car drivers are the cause of the majority or minority of cases, shouldn't they wish to make efforts to avoid killing other road users?