On Thu, 3 Mar 2016 20:43:04 +0000, Roland Perry
wrote:

In message
-sept
ember.org, at 17:37:24 on Thu, 3 Mar 2016, Recliner
remarked:

It's not the crowds on the trains that's the problem. It's the crowds at
the western end of the Green Park Picc platforms queueing for the
escalators.

What are these crowds? Green Park is the 14th busiest, with a third of
the entries and exits of the top ones.

When a busy train disgorges lots of passengers, the queues for the
escalator(s) soon back up into the platforms. Also, passengers
arriving from the surface have to negotiate the same route, so the two
streams are in conflict.

Most other busy deep stations have signposted one-way stairs and
corridors between the platforms and escalators, so the streams are
kept separate, and the escalators are not so close to the platforms
that the queues back up on to them.