[efuquen]

Denmark has one of the highest union participation rates in the world and they were able to a build a fully automated metro system in Copenhagen.

[jseliger]

Denmark is also considerably different than the U.S. along many dimensions: https://www.bloomberg.com/view/articles/2018-02-23/you-can-t... and not just this one.

[romwell]

So it's not the unions then. It's how they function in NYC.

[efuquen]

Yes, exactly my point. Blaming 'unions' for this is simplistic to the extreme. As oyhers have already mentioned many places around the world with strong unions still maintain far better, more advanced metros at far lower costs.