Which groundbreaking feature did Japan's original Shinkansen (bullet train) introduce that revolutionized rail safety and is now standard in high-speed rail systems worldwide?

Japan's Shinkansen (bullet train) revolutionized rail transportation when it debuted in 1964, setting new standards for speed, safety, and efficiency in public transportation. This innovation sparked a global high-speed rail movement that continues to transform how people travel. Test your knowledge about this pivotal moment in transportation history and its impact on the industry worldwide.

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Automatic Train Control system that prevented accidents by automatically applying brakes if trains exceeded speed limits
Electromagnetic suspension technology that allowed trains to hover above the tracks
Solar-powered auxiliary engines that reduced fuel consumption by 40%
Pressurized passenger cabins similar to aircraft to prevent ear discomfort in tunnels