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Pages 22-23

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From page 22...
... 22 intervals needed to be amended; whether track remedial action requirements needed to be amended; and whether different track inspection priorities and methods were required. A study was presented to Congress on May 2, 2011, and in August of the same year the Railroad Safety Advisory Committee (RSAC)
From page 23...
... 23 not matched correctly. Noise and vibration can also develop if the match is not correct.

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