Apart from the DOT motorcycle helmets safety standards, there is another helmet regulation body in the USA named SNELL. DOT sets the minimum standards for motorcycle helmets which are to be used on public roads. Snell helmets on the other hand set the voluntary standards for non-profit and private organisations which use auto racing helmets in their events. Snell helmets undergo testing whereby they are pressed against a steel edge anvil which simulates a guardrail edge to determine impact severity. The Snell organisation usually buys Snell helmets for lab testing as part of follow up testing certification.
For female motorcyclists, there are special women helmets available in the market. These helmets are quite different from men helmets in that women helmets are slightly smaller. The women helmets are also designed to have more appeal but with all protection considerations intact. Women helmets come in more appealing colours such as polished purple and bright pink. The main point in women helmets is that they should not hinder the lady from flaunting her feminine aspects while dotting the same. This also means that sex appeal is a major consideration when designing women helmets.