On Sun, Nov 05, 2017 at 09:17:29PM -0800, Ding Bat wrote:

I didn't know where else to ask the question. Be that as it may, I've seen
speculation over whether it would be a good idea for underground trains
to be longer than platforms.

We already have that.

If they were thus lengthened, then since the
carriages at the ends could have at most one door, foot traffic could be
limited to the capacity of just one door by making them sitting only
carriages, and thereby upper class.

But not that. TPTB seem to not like SDO and new instances of it are
rare.

--
David Cantrell | top google result for "internet beard fetish club"

The test of the goodness of a thing is its fitness for use. If it
fails on this first test, no amount of ornamentation or finish will
make it any better, it will only make it more expensive and foolish.
-- Frank Pick, lecture to the Design and Industries Assoc, 1916