1. Definition of Operating Authority
An MC (Motor Carrier) number, often referred to as an FMCSA docket number or Operating Authority, is a federal permit that authorizes a company or individual to operate as a for-hire carrier or broker in interstate commerce.
While a USDOT number tracks safety compliance for vehicles, an MC number governs the commercial right to transport federally regulated property, household goods, or passengers across state borders for payment.
2. Who Needs an MC Number?
Operating authority is required for entities that perform for-hire transportation or freight arrangement services, including:
- For-hire Motor Carriers transporting federally regulated property in interstate commerce.
- For-hire Passenger Carriers providing charter, tour, or interstate scheduled bus services.
- Property Freight Brokers arranging transportation for compensation (mandated to file Form BMC-84 $75,000 surety bond).
- Freight Forwarders (issued FF numbers) consolidating and managing shipments.
3. Mandatory Financial Responsibility Filings
To obtain and maintain active MC authority, an entity must have its insurance underwriter submit proof of public liability insurance (Form BMC-91 or BMC-91X) or surety bonds (Form BMC-84) directly to the FMCSA. In addition, carriers must designate process agents in all 50 states via Form BOC-3.