Unified Registration System (URS)
The Unified Registration System is the online registration process FMCSA set up under a 2013 rule to consolidate how carriers, brokers, and freight forwarders register, moving from a scatter of legacy paper forms toward a single online process anchored on the USDOT number.
What it changes
Under the older system a company might juggle a USDOT number, one or more MC docket numbers, and separate filings that did not always line up. URS points toward the USDOT number as the single federal identifier and folds registration steps into one application. Rollout was staged and rescheduled for years. In May 2026 FMCSA retired URS for new applications and named Motus as its replacement. Motus kept MC numbers, and they still appear on load boards and paperwork.
Anchor records on the USDOT number
The direction of travel is that the USDOT number is the durable key to a company's federal record and the MC number is a pointer that resolves to it. Anchoring your records on the USDOT number, rather than the MC number, keeps them aligned with where federal registration is heading. fleetfax accepts either number and resolves both to the same underlying USDOT record.
fleetfax reads public FMCSA data and is not affiliated with FMCSA or the U.S. Department of Transportation. This page explains terminology; it is not legal advice.
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