>In Australia, 80% of cyclist death happen with a helmet.
Do more or less than 80% of cyclists wear a helmet? That stat is worthless without qualification (in my experience the vast majority of people in Australia wear helmets, especially when cycling on the road).
Not that I disagree with your general point; for the moment I am undecided.
It mostly means cyclists also die from other causes than head injury. I just wanted to point out that there is controversy, I don't however have the definitive answer about red lights and helmets.
If 95% of cyclists wear helmets (that would be my guess, at least when cycling on the road) and only 80% of fatalities happen with a helmet then it would seem to me that helmets are very effective - which is why you need to qualify the statistic.
Do more or less than 80% of cyclists wear a helmet? That stat is worthless without qualification (in my experience the vast majority of people in Australia wear helmets, especially when cycling on the road).
Not that I disagree with your general point; for the moment I am undecided.