This is a special kind of track, seen on the new part of the tram line 1 in
Cologne on 15 June 2002. It is used to avoid that vibrations from the trams
disturb the nearby TV studios of RTL.
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Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>