Hong Kong subway trains collide amid new signal system trials
Two trains collide during a new signal system trial, threatening travel disruption for millions.
from BBC News - World https://ift.tt/2TKuvP2
from BBC News - World https://ift.tt/2TKuvP2
Hong Kong subway trains collide amid new signal system trials
![Hong Kong subway trains collide amid new signal system trials]()
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March 17, 2019
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