Which innovative safety feature was first pioneered by Japan's Shinkansen bullet train system that has since become standard in high-speed rail logistics worldwide?

Japan's Shinkansen (bullet train) revolutionized transportation globally and created an entirely new product category. These high-speed rail systems represent one of the most significant innovations in transportation retail logistics of the past century, combining speed, safety, and efficiency. Test your knowledge about how this groundbreaking product development transformed the transportation industry and set new standards for rail systems worldwide.

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Automatic Train Control system that stops trains during earthquakes
Maglev (magnetic levitation) suspension technology
Vacuum tube tunnels for reduced air resistance
Hydrogen fuel cell propulsion system