The Shinkansen, colloquially known in English as the bullet train, is a network of high-speed railway lines in Japan.

The original Tōkaidō Shinkansen, connecting Tokyo, Nagoya and Osaka, three of Japan's largest cities, is one of the world's busiest high-speed rail lines. In the one-year period preceding March 2017, it carried 159 million passengers, and since its opening more than five decades ago, it has transported more than 5.6 billion total passengers. The service on the line operates much larger trains and at higher frequency than most other high speed lines in the world. At peak times, the line carries up to thirteen trains per hour in each direction with sixteen cars each (1,323-seat capacity and occasionally additional standing passengers) with a minimum headway of three minutes between trains.

Over the Shinkansen's 50-plus year history, carrying over 5.3 billion passengers, there has been not a single passenger fatality or injury due to train accidents.

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