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Commercial Auto & Trucking
MC Number (Operating Authority)
Also known as: MC · operating authority · motor carrier number
FMCSA-issued authority granting a motor carrier or broker permission to operate for-hire across state lines.
An MC (motor carrier) number is operating authority issued by FMCSA. Required for any motor carrier hauling for-hire interstate, freight broker, or freight forwarder. Different MC types exist: common-carrier (general public), contract-carrier (specific shippers), broker, and forwarder. Activating an MC requires proof of insurance (BMC-91 for carriers, BMC-84 for brokers) and a BOC-3 process agent designation.
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