The system helped prevent deadly derailments of high-speed trains in Japan before the shaking arrived from the magnitude 9.1 earthquake of 2011, for instance, signaling the trains to slow down. Memora…
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The Japan News
The system helped prevent deadly derailments of high-speed trains in Japan before the shaking arrived from the magnitude 9.1 earthquake of 2011, for instance, signaling the trains to slow down. Memora…
( read original story …)