If you get stuck
on the tunnel, with a lot of passengers on the carriage with you, at rush hour, I bet you get O2 depletion.
(Aberracion Life's getting very complicated, but a lot of fun., Wed 7 Sep 2011, 14:46, 1 reply, 14 years ago)

I really, honestly doubt it
the train isn't sealed and the tunnels aren't sealed and humans don't use that much oxygen
( the mighty badger Aphrodite, on a bar stool, by your side, Wed 7 Sep 2011, 14:48, Reply)

But so many humans
in such a little space... no, it can't be good, and you don't need that much depletion.
(Aberracion Life's getting very complicated, but a lot of fun., Wed 7 Sep 2011, 14:51, Reply)

You'd last more than an hour in a sealed coffin before oxygen depletion caused you any significant problem
You'd have died of dehyrdation in a stuck tube train before you ran out of oxygen, even full of people. Remember you've got to use up the oxygen in the train, the whole length of the tunnel and every station on the line even ignoring all the vents to the surface. Gases diffuse from regions of high to regions of low concentration and they do so reasonably quickly. Certainly faster than load of passengers can use it up.

Jesus, sometimes I even bore myself. Sorry.
( the mighty badger Aphrodite, on a bar stool, by your side, Wed 7 Sep 2011, 14:58, Reply)

Right, I know
still, it makes me unconfortable. Now I need to carry a bottle of water with me at all times.
(Aberracion Life's getting very complicated, but a lot of fun., Wed 7 Sep 2011, 15:00, Reply)