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Commercial Auto & Trucking
USDOT Number
Also known as: DOT number
A unique identifier assigned by FMCSA to commercial vehicles operating in interstate commerce.
Every commercial motor vehicle operating interstate (and in many states, intrastate) must have a USDOT number registered with FMCSA. It tracks the carrier's safety record, inspections, audits, and crash data. Most states also require intrastate USDOT registration for vehicles above certain weight thresholds. The number is the primary identifier linking insurance, safety filings, and authority.
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