"Batman55" wrote in message
...


I would be surprised if people standing still can be higher capacity than
people moving!
I was stating a fact rather than an opinion. How well it works in practise
depends on how efficiently people load themselves onto adjacent steps of the
escalator, so it helps a lot if everyone knows in advance that they will be
standing both sides.

You only have to come off a free moving 60mph road onto a 30mph road to
know the traffic immediately closes up and slows down and queues form.

The optimum speed for maximum road capacity is around 15 mph; stopping
distance (and thus vehicle spacing) is proportional to the square of speed.
Using road capacity more efficiently is largely what the variable speed
limits on the M25 and elsewhere are all about.

DAS