>>510576112Train and metro are sperate things. Vid is from a metro carriage.
Metro stations themselves don't have any public toilets, but they're almost always connected to underground shopping malls and universities and whatever where there's plenty of toilets and you can just walk in and have a shit.
If not, just ride an escalator/elevator to the surface level while clenching your cheeks and turn whichever direction on the street level to the nearest belle province or gas station or park where they'll have at least portable toilets for the summer.
Train stations do have their own toilets.