<b><a href="https://en.wikipedia.org/wiki/Arlberg_Railway_Tunnel" class="extiw" title="en:Arlberg Railway Tunnel">Arlberg tunnel</a></b> at km 104.8, <a href="//commons.wikimedia.org/wiki/Category:Centered_tunnel_perspective" title="Category:Centered tunnel perspective">perspective view</a> in the direction of <i>Langen am Arlberg</i>. In the course of extensive rehabilitation works the Arlberg <a href="//commons.wikimedia.org/wiki/Category:Rail_tunnels" title="Category:Rail tunnels">tunnel</a> was equipped with a slab track to enable road vehicles entering the tunnel in case of an emergency. To get a larger clearance gauge the new tracks were lowered and the overhead lines were substituted by overhead conductor rails. At the southern track (left) the conductor rail is not yet installed.
<a href="//commons.wikimedia.org/wiki/User:Siegele_Roland" class="mw-redirect" title="User:Siegele Roland">Siegele Roland</a>
CC BY-SA 3.0 at
<span class="int-own-work" lang="en">Own work</span>