Active light rail line in a tunnel with planned/disused branches to the left going both forwards and backwards.
<a href="//commons.wikimedia.org/wiki/User:Imperator3733" title="User:Imperator3733">Imperator3733</a>
2013-08-11 15:17:14
Based on <a href="//commons.wikimedia.org/wiki/File:BSicon_utABZgl%2Bl.svg" title="File:BSicon utABZgl+l.svg">File:BSicon utABZgl+l.svg</a>