Motorcycle helmet symbol
<p>CC0 Public Domain
Free for commercial use
</p>
No attribution required
<a rel="nofollow" class="external free" href="https://pixabay.com/en/helmet-crash-helmet-visor-safety-311920/">https://pixabay.com/en/helmet-crash-helmet-visor-safety-311920/</a> <bdo lang="en" dir="ltr" title="archived on 18 January 2015 at the Wayback Machine"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20150118065055/http%3A//pixabay.com%3A80/en/helmet-crash-helmet-visor-safety-311920/">archive copy</a></bdo>