[bluGill]

Most subways have move above ground sections than underground. That is why the article uses the term "metro" not subway - it better describes something useful about the system. A Metro is a system that runs completely separate from other traffic - this forces bridges or tunnels where other traffic needs to cross it.

[anileated]

Yes. Subway train that goes over ground is just train. Metro or long distance is an actual distinction. If they blend in Japan then that's rare.