track to left against driving direction (with exact circles)
<a href="//commons.wikimedia.org/wiki/File:BSicon_STRlg.svg" class="mw-redirect" title="File:BSicon STRlg.svg">original</a> <i>by</i> <a href="//commons.wikimedia.org/wiki/User:Axpde" title="User:Axpde">Axpde</a>, modification by <a href="//commons.wikimedia.org/w/index.php?title=User:Tve4&amp;action=edit&amp;redlink=1" class="new" title="User:Tve4 (page does not exist)">Tve4</a>
2010-01-03
Own work based on: <a href="//commons.wikimedia.org/wiki/File:BSicon_STRlg.svg" class="mw-redirect" title="File:BSicon STRlg.svg">BSicon STRlg.svg</a>