TOKYO -- One of Japan's celebrated shinkansen bullet trains was only 3cm away from a possible disaster, including derailment, its operator West Japan Railway (JR West) has revealed.
Crack could have caused derailment; operator took three hours to stop the train

The crack in the bullet train's undercarriage is 3cm short of completely severing the steel frame. (Courtesy of JR West / Kyodo)
TOKYO -- One of Japan's celebrated shinkansen bullet trains was only 3cm away from a possible disaster, including derailment, its operator West Japan Railway (JR West) has revealed.