Dual mode Unimog with a skylift for catenary construction seen in Sindorf (on
Cologne-Aachen) on 19 February 2002. The rail wheels are not driven, the
traction is performed by the rubber tires which sit on the rails. A third
headlight for rail operation is mounted on the cab.
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Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph Schmitz</a>