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Bullet Train Technologies
Bullet train refer toThe Shinkansen high speed trains of Japan.
Bullet Train Technologies
The Shinkansen has succeeded thanks to several kinds of technology,A streamlined body
To achieve speeds of 200 kilometers per hour (130 miles per hour) and more, the trains needed to be as aerodynamic (to cause as little wind resistance) as possible. That is why the front cars of the Shinkansen trains are tapered like the nose of an airplane.
When trains reach high speeds, the wheels vibrate on the rails. If this vibration reaches the passenger compartments, it can make them fall apart. To prevent this, the passenger compartments ride on top of flatcars. These are fitted with an air spring that uses compressed air to absorb the wheel vibration so that it does not reach the passenger compartments.
Until the Shinkansen was built, Japan did not have the wide-gauge (1,435 millimeters wide) railway tracks that were the standard in the rest of the world. Instead, Japanese trains ran on narrow gauge tracks (1,067 millimeters wide). Most people felt that wide gauge railway tracks were necessary to move large numbers of people and large volumes of goods, so wide gauge tracks were built for the Shinkansen. And to allow the trains to go as fast as possible, Shinkansen tracks have no sharp curves. Also, Shinkansen tracks never cross other railway lines on the same level, so the trains never have to stop and wait for other trains to pass.
Automatic Train Control
On regular trains, drivers adjust the trains speed according to the signals they see along the tracks. But Shinkansen trains travel at over 200 kilometers per hour, making it almost impossible for drivers to read signals as they whiz past. So Shinkansen trains have a different kind of speed control system, known as ATC. With this system, speed information is transmitted along the track and is received by a signal attached to the drivers seat. The ATC automatically keeps the train running within the designated speed limit. The Shinkansen also depends on Centralized Traffic Control, a system that makes sure there is enough time and distance between trains so that the high speed train system operates smoothly and safely.Thanks to these technologies, the Shinkansen has been running continuously since it first opened, with no major accidents. As of 1999, its thirty fifth year of operation, the Shinkansen had carried a total of about 5.6 billion passengers along its Tokaido Sanyo, Tohoku, Joetsu, and Nagano routes. Thats almost as many as all the people in the world.
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