BDK coyote, I was going off what's on the Motorcycle Council of NSW website.
On
5 February 2010, NSW introduced a retrospective definition for “an approved motor bike helmet”. This created market chaos. Riders got fined. Small helmet importers suffered financially. So the then RTA had another go after protests.
Since
5 November 2010, there are only four labels permitted on helmets purchased after 31 March 2010.
Buy one of these stickers with a helmet attached and that’s how to comply with NSW Road Rule 270. These are fine protection.
RMS helmets webpage
EXEMPTION
If your head requires a helmet larger than 62 cm, since
28 September 2012 you can wear a different helmet, BUT there are conditions
- you need to carry a formal medical certificate
- the helmet must have labels showing it complies with any of
- European Reg ECE 22-05
- Japanese JIS T8133
- USA "DOT" (FMVSS-218)
You're also permitted to wear a helmet marked only by Snell, but we DO NOT recommend this for street use.
European helmets are lighter to reduce neck injury and basilar skull fracture, have excellent impact attenuation, greater test coverage area and a very sound certification process.
Japanese helmets are virtually identical to Australian, but with better impact attenuation (more restricted pulse width) and the most robust certification process of any.
US "DOT" helmets are almost the same as Australian, but with better impact attenuation (more restricted pulse width) and a certification process that places responsibility on the manufacturer (or importer) for compliance. Their recall system is regularly used, in market surveillance testing by NHTSA, backed by a legal system that punishes manufacturers who transgress.
These have labels like this:-
European above left, sewn onto chin strap
USA above right, on rear of helmet
Japanese below, on outer shell
The Japanese compliance system is very strong and the sticker is evidence that the insurance premium for a head injury has been paid for the wearer of that helmet (insured only if in Japan)
Novelty Helmets
Definitely NOT recommended. While an ice-cream bucket with elastic under the chin might be handy for some things, for helmets to be truly useful, they need impact attenuation.
Just 'cos it's cool in the USA doesn't mean it's safe. The US NHTSA reckons they're
Unsafe Motorcycle Helmets and the
Michigan State Police can show you how to identify a novelty helmet.