FMCSA to Retire MC Numbers, Move to USDOT-Only Identifier

Registration modernization will phase out MC numbers across carriers, brokers, and freight forwarders, streamlining compliance and fraud prevention by consolidating authority and history under a single USDOT record.

What’s Changing

• MC numbers will no longer be issued or used.

• The USDOT number becomes the single, authoritative identifier for motor carriers, brokers, and freight forwarders.

• Authority types will be shown within the USDOT record (e.g., suffixes), no new vehicle markings required.

• Targeted phase-out date: October 1, 2025 (timing tied to the Unified Registration System rollout).

Why This Matters

• Simplifies compliance – one identifier instead of two.

• Reduces fraud & double-brokering – all history tied to one USDOT record.

• Improves enforcement & transparency – audits and safety data centralized under the USDOT.

• Streamlines onboarding – shippers, brokers, and customers will shift to USDOT-based verification.

What You Should Do Now

• Verify your USDOT number is active and current (file your MCS-150).

• Begin updating documents, contracts, permits, insurance, and marketing to list your USDOT number instead of MC numbers.

• Ensure your systems and portals are aligned with USDOT-only identifiers.

• Use FMCSA’s SAFER/URS databases for USDOT verification going forward.

Rapidfire Pay will continue monitoring FMCSA guidance and keep you informed as the transition date approaches.  I have created the following checklist to make sure you are carrier compliant for the next evolution in DOT Regulation changes. You can download a free checklist created below.

This is not a complete list - please get professional guidance from a licensed safety/compliance service to ensure you are fully prepared.

Download Checklist