see <a href="https://en.wikipedia.org/wiki/Route_diagram_template" class="extiw" title="w:Route diagram template">Route diagram template</a>
<a href="//commons.wikimedia.org/wiki/User:Bj%C3%B8rnN" title="User:BjørnN">BjørnN</a>
2007-08-24
self-made, based on BSicon_uSTRlg.svg