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Special Studies

Published by Federal Motor Carrier Safety Administration | Department of Transportation | Catalog Last Checked: October 21, 2026 at 09:34 PM | Dataset Last Updated: October 21, 2026
Identifies the study field and study results that arise from ad hoc examination of items, usually inspected in support of a particular study or verification/refutation of a specific trend. This inspection type is a Level IV inspection.

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