On Mar 5, 6:24*pm, (Neil Williams)
wrote:
On Thu, 5 Mar 2009 11:20:03 +0000, Roland Perry
wrote:

Many countries have escalators that work "on demand" and usage is on a
combination of signage and context.

Including Hamburg, where my old local station, Kiwittsmoor, had one
escalator which was up in the morning and down in the evening, as I
recall.

I'm pretty sure I've also encountered ones that will go either way
depending who gets there first!

I believe it, but what possible use could that be? Unless there was
some control, you'd end up with everything going the same way and no
way either in or out depending on chance.

Why should an one person set the direction of the whole escalator by
chance? An intelligent decision about how many escalators need to go
each way at a particular time of day is far more appropriate.