Upgrading of the train protection systems on the tracks of the Swiss Federal Railways. This facility is part of the level crossing safety system. In the transitional phase, the old and new facilities are still side by side in operation. Staad, Switzerland, May 11, 2011.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/70981241@N00">Kecko</a>
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