Adjustable-gauge are used in Switzerland for a mountain line (Montreux-Interlaken) all through the year. I have never seen temperature issue mentioned.
https://www.gpx.swiss/en/stories/technology (the video is rather cool)
Nevertheless that’s what the initial feasibility studies showed. I don’t think the amount of complexity involved in that Swiss system would scale at all.
Sharlin|9 months ago
janfoeh|9 months ago