3 ms·

There will also be significant elevation changes

• genocidicbunny 4y ago
  There will be, but seeing as this is a tunnel system, those elevation changes can be spread out a lot more than they would be if this was overland. I'm sure it's _a_ factor, but not likely to be the biggest factor in the max speed.
• _nalply 4y ago
  Bern is at 550 m (1800 feet) and Basel at 260 m (850 feet). I don't think that elevation changes matter a lot.