Four minutes later a 5-car MoHa 63 series train (1271B) approached from Yokohama Station and changed lines 50 metres before Sakuragichō but the pantograph of the leading carriage became tangled in the hanging contact wire.

The connecting door to the second carriage only opened inwards, impossible with the crowd of panicking passengers inside.

Intended to escape an expense of a large, full-sized glass pane, this design left the openings too small to pass through.

Although the electrically operated doors had manual overrides positioned under the passenger seats, this was poorly signed.

Shima was later employed with Japanese National Railways in 1955 to design and build Japan's first "bullet train" (Shinkansen).