Special catenary configuration above a double-slip switch with outside tongues
(also known as "Baseler" type) seen at the western end of Köln Ehrenfeld
Gbf on 31 July 2002. The two contact wires are spread to ensure that they cover
every possible route the train (and the pantograph) can take.
<p>
Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>