[awuji]

I have talked to somebody in the SBB R&D department recently about this and the problem is actually that there has to be at least one person on the train.

Imagine a door gets jammed or there are some problematic passengers. If there is someone on board they can fix the problem in a couple minutes. But on a completely automated train there is no one on board to fix the problem. One solution would be that you send out crews to arrive at smaller stations and fix the issue, and larger stations could have dedicated people, but that is already more investment and less efficient than just having someone on board.

Retrofitting automation for a train network in a wealthy country like Switzerland wouldn’t be a big problem, but it just makes more sense to leave the driver in there. Accordingly, SBB is investing much more into driver augmentation to help the drivers drive as efficiently, safely, and consistently as possible.