Right track of a double light rail turning to the bottom-left corner (corner #3).
derivative work: <a href="//commons.wikimedia.org/w/index.php?title=User:Zbyn%C4%9Bk_Stara&amp;action=edit&amp;redlink=1" class="new" title="User:Zbyněk Stara (page does not exist)">Zbyněk Stara</a>
2013-01-21
This <a href="https://en.wikipedia.org/wiki/vector_image" class="extiw" title="w:vector image">vector image</a> includes elements that have been taken or adapted from this file: