In fact, Bill's job seems mostly to revolve around helping passengers stumble off the moving stairway with their dignity and shopping intact.
The Guardian(Jan 08, 2013)
"It's a moving stairway, precious," added his mother.
Wrenn, Charles L. (Charles Lewis), Sunny Boy in the Big City(2010)
"They're trying moving stairways in some places,—a French invention, I believe."
Luther, Mark Lee, The Henchman(2010)