A closer look

A single person tripping onto the tracks in Tokyo doesn't just ruin a morning commute; it mathematically paralyzes a metropolis of thirty million people. Knowing human clumsiness is inevitable, Tokyo Metro enclosed their platforms with massive transparent walls. The magic is in the synchronization: the train stops with millimeter precision, and the train doors align flawlessly with the platform doors, opening simultaneously. It completely walls off the deadly tracks from the exhausted masses, forcefully fixing human error.