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Law enforcement rarely records fatigue as a cause in fatal truck accidents. Independent owner-operators say that shows it s not a big problem. But the I-Team finds that even unless the driver admits to being sleepy, fatigue is not recorded as a factor.

Safety advocates and regulators say fatigue is grossly under-reported by law enforcement on official reports. The I-Team shows a prominent example.

Click the video player above to watch the third segment.

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