A double-slip switch under construction seen in Sindorf on the upgraded line
Cologne-Düren
(<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/strecke/strecke.html">ABS 4</a>) on 10 October 2001. The outer rails are for the diverging
routes. Between them are the crossing tracks with the flangeways, one of the
tongues was already attached to them. Another tongue lies in the foreground.
Between the crossing rails the inner rails for the diverging routes will be
installed, their fixtures are visible.
<p>
Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>