Funktionsweise des ETCS Level 3. Modifikation einer Zeichnung von de:Benutzer:Sansculotte
<ul><li><a href="//commons.wikimedia.org/wiki/File:ETCS_L3_w_RBC.jpg" title="File:ETCS L3 w RBC.jpg">ETCS_L3_w_RBC.jpg</a>: bukk</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Mickdermack" title="User:Mickdermack">Mickdermack</a></li></ul>
CC BY-SA 2.5
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