David A Stocks wrote:

The only NR barrier line I use regularly is the one serving platforms
15-19 at Victoria, and this is the only one I've encountered that seems to
have acceptable capacity in the morning peak. It only fails on the rare
occassions that two full trains arrive simultaneously - they usually open
all the gates and shout at people to walk through.

How are the barrier lines going to cope if and when Oyster PAYG is
implemented on more NR lines? For that matter how does the tube handle
people needing to go past a pad against the need to get huge crowds through
quickly? I remember havig some problems with Victoria in the carnet days
because it was impossible to validate my ticket on entry as they often
closed the entry barriers and let people through the manual gate in batches
at a time.