Why does everyone stand on the left in Tokyo but on the right in Osaka?
On escalators, people stand on one side and leave the other open for walkers, but the standing side flips between Tokyo (left) and Osaka (right).
It's local convention, not law. Each region settled on a default side, and people copy whoever's there, so the habit sticks and differs by city.
Why — five layers
You read the air and copy the person ahead; a local default emerges and self-perpetuates, which is why the two cities diverged.
There's no official rule to walk; in fact operators now ask people to stand on both steps for safety, cutting against the habit.
Popular origin stories cite Osaka's 1970 Expo or older left/right walking customs, but the exact cause is uncertain, likely path-dependence.
International view
Stand-one-side-walk-the-other exists in London and many cities. Japan's quirk is the sharp Tokyo/Osaka reversal within one country.
But not always
Rules aside, safety campaigns discourage walking on escalators, and some places now sign 'stand on both sides.' The custom is shifting.
What to do
Just glance at which side locals stand on and match them. If unsure, stand still and hold the rail; don't block the open side.
Sources
- Escalator safety campaigns; regional etiquette testimony