The National Transportation Safety Board on Wednesday issued a safety alert to subway systems and commuter railroads over a wheelset problem that led to a derailment in the nations capital, saying the defect is difficult to detect and potentially devastating.
from Top World News- News18.com https://ift.tt/3xFNZ8s
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from Top World News- News18.com https://ift.tt/3xFNZ8s
https://ift.tt/eA8V8J