A multiple system ICE 3 (class 406) makes round-trips on the Open Day at the
Wildenrath Test Centre of Siemens on 25 August 2002. It is running on the large
test ring (6082 m long). Note the third rail that is used to test trains for UK
where 750 V DC is still used in the south.
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Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>