On June 26, 1962, trial runs began on the Kamonomiya model line of the Tōkaidō Shinkansen. The section was about 30 kilometers long. It was built so that prototype trains and new equipment could be tested in real conditions before the whole line was finished.
On March 30, 1963, a test train reached 256 kilometers per hour on the model line. In February 1964, the model line became part of the Tōkaidō Shinkansen.