Furrer+Frey install Europe’s first TSI-compatible HSR overhead conductor in Austria December 29, 2014 | Europe News Switzerland-based Furrer+Frey has installed a rigid 15 kV AC overhead conductor rail for the Sittenberg tunnel on the Wien-Linz route in Austria. It is the first in Europe to comply with the tech... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password