I thought I knew two things and it turned out one of them was wrong. But now I know a lot.

Tricky system to standardise (lots of investment done into seperate standards), but I am glad that it appears high-speed railroads are built with a common standard in mind. Maybe one day not to far away, it will be cheaper and faster to go by train to most destinations. Or at least one of the two.

A follow-up question: what is a coupler?

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