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by sigwinch28 142 days ago
Measurement trains filled with cameras and LIDAR

For example, in the U.K.:

https://en.wikipedia.org/wiki/New_Measurement_Train
2 comments
jen729w 142 days ago
https://en.wikipedia.org/wiki/Doctor_Yellow
link
user_7832 142 days ago
LIDAR is good, but as another commenter pointed out, Ultrasonic Flaw Detection (USFD) is the gold standard for crack/flaw detection.
link