These are the entrance signals of Köln Ehrenfeld at the freight line
coming from Köln West. Both are combined signals, and they have a Zs3
(speed indicator) each. But there is no Zs3v (announcement of Zs3). The right
signal shows Ks2 with Zs3 "6", which means "Proceed with 60 km/h, expect stop".
The elevated track in the background is the passenger track from Ehrenfeld to
Köln Hbf.
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Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>