Japan was the first country to realize autonomous driving (GoA4) in the world, but autonomous driving on the subway is behind the world. At present, the introduction of automated driving is being considered in subways and conventional lines in Japan, but the driver plays a very large role, and the role of the autonomous driving is to ensure the same safety as the driver by sensors. However, in Japan, where the birthrate is declining and the population is aging, it is essential for subways and conventional lines to operate automatically, which can also contribute to productivity improvement.
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