On the Swiss RhB, the Bernina line has a maximum grade of 7%, and you can really feel that the powerful electric locos are struggling. The maximum grade of the other RhB lines is 4.5%.
I've been on the MGB (Matterhorn Gotthard Bahn) between Brig and Zermatt. The grade on this line is as high as 11%, which requires a cogwheel drive loco. (The MGB was formed by the merger of the BVZ and FO.)
I've been on the MGB (Matterhorn Gotthard Bahn) between Brig and Zermatt. The grade on this line is as high as 11%, which requires a cogwheel drive loco. (The MGB was formed by the merger of the BVZ and FO.)