<a href="https://en.wikipedia.org/wiki/Route_diagram_template" class="extiw" title="w:Route diagram template">Route diagram template</a>: Split level interchange.
<a href="//commons.wikimedia.org/wiki/User:AlisonW" title="User:AlisonW">Alison Wheeler</a>
2008-08-13
Self-made, based on existing BSicon