The differences between Japan's Jr, Shinkansen and private railways are as follows: Jr: Full name: Jr is the abbreviation of Japan Railways, which can be literally translated as Japanese Railways. Background: Jr's predecessor was Japan's state-owned railways. Due to operational problems, it was divided and privatized. It is now owned by 7 railways. Laxative 3-1 is updated to improve the description of the separation of speeds on the same line. The original Keihin Tohoku Line Express example is not typical and should be combined with other lines. Update 1-11, add some pictures, improve descriptions. The pictures in this answer are all from wikimedia if. Ii, iii, and iv are Roman numerals representing 2, 3, and 4. If several generations of sons have the same name, put ii and iii after the name.
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