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The system has been developed to increase the operational speed of the trains on Japanese narrow gauge lines which have many curves. With the system, car bodies are tilted at curves to compensate for unbalanced car body centrifugal acceleration to a greater extent than the compensation produced by the track cant, so that passengers do not feel centrifugal acceleration and thus trains can run at higher speed at curves.
Tilting trains are being operated in Europe and Canada, other than Japan. However, for the following reasons, it is obvious that the Japanese system is the most suitable one for a meter gauged line which has many reverse curves.
Today more than 536 units of tilting train cars are in operation in Japan and Australia.