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https://en.wikipedia.org › wiki › Hot_box
Hot box - Wikipedia
A hot box is the term used when an axle bearing overheats on a piece of railway rolling stock. [1] The term is derived from the journal-bearing trucks used before the mid-20th century.
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The railroads found a solution, watching for fireballs passing by, at least until the current Department of Transport
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https://www.cnn.com › 2023 › 02 › 25 › us › ohio-train-derailment-bearing-vibration › index.html
Hot box detectors didn't stop the East Palestine derailment ... - CNN
25 Feb 2023A preliminary report from the East Palestine derailment, released Thursday by the National Transportation Safety Board, found hot box sensors detected that a wheel bearing was heating up miles...
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This could work if there were some way to respond to an alert. Maybe a pop-up safety net as on aircraft carriers?