This map highlights bicycle helmet legislation around the world.
Red areas are countries or states that have an all-age mandatory bicycle helmet law. The pink areas represent countries or states that have a significant exemption (most notably a child-only helmet law or an exemption for footpath & cycle path riding – Northern Territory). Finland is shown in pink as while it has an all-age bicycle helmet law, there is no fine and it is not enforced.
Dots represent jurisdictions (city or county) in the USA where there are either all-age bicycle helmet laws (red) or significant exemptions (pink) – again, the most common one is a child only helmet law.
White areas do not have bicycle helmet laws.
Now, ignoring the fact that this is a Mercator Projection, does Australia look normal to you?
*apologies to our friends in the USA for our hand drawn state outlines.