Doctor Yellow Shinkansen: The Iconic Test Train

The Shinkansen network of high-speed bullet trains in Japan has a great safety record, thanks in large part to Doctor Yellow, the Shinkansen test train.

The Doctor Yellow Shinkansen is so named because it literally diagnoses any problems with the track and overhead wires as it speeds along, and is painted yellow instead of the regular white to make the trains more visible at night.

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