FMCSA Eliminates MC Numbers: What the Change Means for Motor Carriers
As of October 1, 2025, the Federal Motor Carrier Safety Administration (FMCSA) has officially discontinued the use of Motor Carrier (MC) numbers. Moving forward, the USDOT number will serve as the sole identifier for motor carriers operating in interstate commerce — marking a major shift in how the agency tracks and regulates carriers across the nation. Why the Change? The FMCSA’s decision is part of a larger effort to streamline data systems and simplify compliance for carriers. Historically, carriers were issued both an MC number and a USDOT number — two identifiers that often caused confusion for new entrants and created redundancies in federal databases. By eliminating MC numbers, the FMCSA aims to: Reduce administrative burden on carriers and brokers, Consolidate records under a single, unified identifier, and Enhance accuracy within the FMCSA’s safety and registration systems. What Carriers Need to Know If you’re an existing carrier or broker with...