I'd be surprised if the unions representing the train drivers in France were just all "ok, cool, automate away and fire the drivers when you're done". Did they require that drivers be employed in other positions, or receive some sort of training for different jobs?

Unions in the US are annoyingly different: most (at least those that I'm even passingly familiar with) seem to have one major goal: keeping the status quo (with regular pay and benefits increases for its members, of course). They generally do not go for "hey, we're going to eliminate your jobs, but we'll compensate you in such a way that you'll continue to be gainfully employed elsewhere".

> I'd be surprised if the unions representing the train drivers in France were just all "ok, cool, automate away and fire the drivers when you're done". Did they require that drivers be employed in other positions, or receive some sort of training for different jobs?

Often that topic does not even come up because companies are not firing people to begin with like they do in the US. They just transition into a new role (for instance they could become light rail drivers in the same network where automation is not yet achievable).

Interesting. Is there that much slack in employment to cover that? I mean, if you automate a transit line, presumably you're displacing dozens of now-former train operators. It would surprise me if they always have productive, useful jobs to move people to in these situations.

AFAIK all the Paris lines moving to GoA4 have been done with no compulsory redundancies.