Mississippi State Researcher Says Metro’s, ‘Stand Right, Walk Left’ is all Wrong
March 28, 2019
Work underway on an escalator at the Medical Center station along Metro's Red Line in Bethesda on Sept. 18, 2017.
Photo by Katherine Frey with The Washington Post.
The best way to move people on escalators is when they stand still, a Mississippi State expert says.
It’s that time of the year when tourists flock to the nation’s capital so that
Washingtonians can inform them — courteously, kindly, patiently, forbearingly — to
“Stand right, walk left” on Metro escalators.
So with spring and cherry blossoms in the air, perhaps it’s time to renew the perennial
question about whether that etiquette actually makes sense.
Lesley Strawderman, a professor of industrial and systems engineering at Mississippi State
University, says it does not. In an article that appeared this month in
says people who walk on escalators slow things down.
Strawderman — whose other writings investigated topics such as “Utilization of behavioral studies in developing the intermodal simulator for the analysis of pedestrian traffic” — says that in general, we’d be better off if people rode two at a time and just stood still.
“Stand on both sides of the escalator,” she writes. “Others will follow.”
That’s exactly the problem we run into this time of the year.
The Washington Metropolitan Transit Authority (WMATA) has more escalators than any other
transit system in North America: 618, to be exact. So it stands to reason Metro may also
have more people gumming up the works on escalators than any other transit system in North
calls them “escalumps.” Harried Metro riders have no doubt
called them worse.
When Greater Greater Washington sponsored a contest
on how to improve
Metro a few years ago,
some requested signs to remind Metro riders to stand right and walk left on the escalators,
reported. One person even proposed using colorful footprints on the escalator steps, with one
pair of feet walking on the left and another standing to the right — a fun,
hokey-pokey-like diagram that, alas, wouldn’t work in Washington because the direction
of some escalators is often reversed.
But Strawderman challenges the notion that we go farther and faster by jumping into the
escalator’s left lane. She argues that the stand-only principle is better and holds
true whenever the system is near peak capacity, regardless of the length of the escalator.
She also acknowledges that it’s counterintuitive, not to mention downright annoying for
Type A personalities.
“My recommendation of everybody standing actually slows some people down,” she
said in an interview Tuesday. “It means you’re on the escalator longer but it
still, overall, lets us get more people on and off the escalator in a shorter amount of
For starters, Strawderman says only about one in four people is “impatient”
enough (her word) to hustle up and down an escalator. That raises the question of whether
it’s sensible to set a policy for a minority of lane-passers when most people are
content to let the escalator do the walking.
What’s more, an experiment on London’s Underground in 2015 demonstrated that
escalators move people more efficiently when everybody goes up two by two and side by side.
Capacity increased about 27 percent, Strawderman says.
But London’s subway — which borrowed the stand-only idea from Hong Kong, according
to the Guardian — also discovered that it wasn’t easy changing people’s
habits. There was less customer resistance to the stand-only strategy in stations with long
escalators, where even hardy passengers are less likely to hoof it. (Think of Bethesda, or
Dupont Circle or Wheaton, whose 230-foot escalator is the longest in Metro’s system.)
But many Tube veterans were so used to passing on the left that the transit agency used
plainclothes employees to block the walkers and make the stand-only experiment work. Tokyo
launched a similar stand-only campaign in December in the name of safety, but there’s
been pushback there, too,
Strawderman said her stand-only proposal has received mixed reactions, too.
“Some people are excited to learn there’s some science to explain how to get more
people on the escalator and get more people through the transportation system,” she said.
“But there are others who think the idea of everyone standing on the escalator is lazy
and slow, and they would rather everybody walk.”
And it turns out that although Washington’s Metro officially adheres to pass-left,
stand-right etiquette, there’s ambivalence.
From the website: “Stand to the right facing forward. Walk on the left.” But Metro
officials at times have played down the official line or flatly contradicted it.
Paul J. Wiedefeld
, Metro’s general
manager, caused a stir a couple year ago when he suggested that people should stand so as to
minimize wear and tear on the machines. “These are very sensitive pieces of
quoted him as saying. Metro officials also say slips, trips
and falls are common injuries on escalators as a result of people jostling each other when
But Metro officials also get it. Thanks to the riders themselves, the “stand
right” etiquette is pretty well established in
— to the extent that reminders and other signage are
unnecessary, a spokesman said.
“Metro customers have done more to determine escalator etiquette than any policy, rule
or sign ever could,” Metro spokesman Ian Jannetta said in an email. “There are
places, such as the website, where we note customary behavior with the goal of familiarizing
new riders and visitors . . . [But] it’s also important to note that, while we recognize
the common practice of ‘standing to the right,’ we don’t officially
encourage walking on a moving escalator.”
Sounds like that’s our job.
By Fredrick Kunkle
The Washington Post