It suggests passengers get off at the next stop if they start to feel poorly, and do not board a train while unwell.

BBC: Rail passengers told 'eat breakfast' to avoid delays

When Tokyoites tell you to get off at every stop, they are pointing you towards these in-between spots, where the tell-tale signs of daily life are not overshadowed by crowds, tourists, skyscrapers and beguiling lights.

BBC: Seeing Tokyo along the Yamanote Line