Can I haul freight with just a DOT number?

Only if you don't need operating authority, for example as a private carrier hauling your own goods, a carrier hauling only exempt commodities, or an intrastate carrier. Hauling regulated freight owned by others for pay across state lines requires an active MC authority as well.

Do I get a DOT number and an MC number at the same time?

New applicants apply for both in one registration, but having the numbers doesn't make the authority active. It stays pending until FMCSA finishes its review and the insurance and BOC-3 filings are on record. FMCSA's guidance is 20 to 25 business days for a complete application.

Are MC numbers going away?

No. FMCSA's Motus fact sheet says Motus keeps issuing docket numbers with the same MC, MX and FF prefixes, and existing numbers don't change. New numbers are randomized, and each new authority gets its own docket number.

Does a freight broker need an MC number?

Yes. Brokers arranging transport of regulated freight for pay need broker operating authority, which FMCSA issues as an MC docket number, plus a USDOT number. Brokers also have their own financial security requirement instead of the carrier liability filing.

MC number vs DOT number

Reviewed October 3, 2026 · Numbers are Rookiefeed analysis as of October 19, 2026, updated daily

A USDOT number identifies a company for safety oversight, and FMCSA requires one for commercial vehicles in interstate commerce. An MC number is operating authority, needed on top of the USDOT number to haul regulated freight for pay across state lines. A new DOT number isn't an active MC: authority goes active only after FMCSA grants it and insurance and BOC-3 filings are on record.

What a USDOT number is

FMCSA says companies that operate commercial vehicles carrying passengers or cargo in interstate commerce must register and have a USDOT number. It's the identifier FMCSA uses to collect and track a company's safety record from audits, compliance reviews, crash investigations and inspections.

You generally need one if a vehicle in interstate commerce has a gross weight or weight rating of 10,001 pounds or more, carries more than 8 passengers (including the driver) for pay, carries more than 15 passengers, or hauls hazmat in amounts that need a safety permit. FMCSA also lists dozens of states, Texas, California and Florida among them, that require a USDOT number for intrastate carriers.

What an MC number is

An MC number is a docket number for interstate operating authority. FMCSA says companies need authority in addition to a USDOT number if they transport federally regulated commodities owned by others, or arrange their transport, for pay in interstate commerce, or carry passengers interstate for pay. Authority shows up as MC, FF (freight forwarder) or MX (Mexico-domiciled) depending on the type.

Unlike a USDOT number, a company can hold several authorities, and the type of authority sets the insurance it must keep. Since the Motus cutover in May 2026, each newly granted authority gets its own docket number.

Who needs which

FMCSA's authority page lists private carriers, carriers hauling only exempt commodities and carriers working only inside a commercial zone as not needing operating authority. The USDOT column follows FMCSA's vehicle and interstate tests.

Operation	USDOT number	MC (operating authority)
For-hire carrier hauling regulated freight across state lines	Yes	Yes
Private carrier hauling its own goods interstate	Yes	No
For-hire carrier hauling only exempt commodities	Yes, if it meets the vehicle thresholds	No
Carrier operating only inside a federal commercial zone	Yes, if it meets the vehicle thresholds	No
Intrastate-only carrier	Depends on the state	No
Freight broker	Yes	Yes (broker authority, an MC docket)

Why a new DOT number isn't an active MC

In the 30 days ending October 19, 2026, 8,044 carriers filed new authority applications and 5,591 for-hire carriers were granted authority. Those are different groups of companies on different days.

Applying for a USDOT number and authority starts the clock, not the authority. FMCSA's guidance for new applicants is 20 to 25 business days, or 8 weeks or more if the application gets extra review.
Authority stays pending until the carrier's insurer files proof of liability coverage (BMC-91 or BMC-91X) and a process agent files a BOC-3. FMCSA says an applicant that doesn't get insurance filed within 20 days of publication in the FMCSA Register is told the application will be dismissed unless it complies within 60 days.
Many applications never become authority. CarrierOk research reported by FreightWaves put the filed-to-published conversion rate around 30% in April 2025, down from a historical 60 to 65%.
Plenty of DOT numbers were never meant to get authority: private fleets and intrastate carriers register for a DOT number too.

What changed with Motus

FMCSA's Motus fact sheet says newly issued USDOT and docket numbers are now randomized to fight fraud, while existing numbers stay the same. New USDOT numbers also display a suffix for the registration type: C for a property carrier with authority, B for a broker, R for intrastate, V for a private carrier and others. The MC, MX and FF prefixes didn't change. More in Motus explained.

If you sell to carriers

A list of new USDOT numbers mixes in private fleets, intrastate carriers and companies whose authority may never go active. A list of granted authority is every carrier that can legally haul interstate freight for pay this week. Rookiefeed is the second kind: every carrier granted authority the day before, by 7am Central. Rookiefeed is $59 a month for one state once a week, $149 for one state every day, $299 for up to 8 states and $599 for every state, and you can cancel any time. Build a free list to see the rows.

Questions

Can I haul freight with just a DOT number?: Only if you don't need operating authority, for example as a private carrier hauling your own goods, a carrier hauling only exempt commodities, or an intrastate carrier. Hauling regulated freight owned by others for pay across state lines requires an active MC authority as well.
Do I get a DOT number and an MC number at the same time?: New applicants apply for both in one registration, but having the numbers doesn't make the authority active. It stays pending until FMCSA finishes its review and the insurance and BOC-3 filings are on record. FMCSA's guidance is 20 to 25 business days for a complete application.
Are MC numbers going away?: No. FMCSA's Motus fact sheet says Motus keeps issuing docket numbers with the same MC, MX and FF prefixes, and existing numbers don't change. New numbers are randomized, and each new authority gets its own docket number.
Does a freight broker need an MC number?: Yes. Brokers arranging transport of regulated freight for pay need broker operating authority, which FMCSA issues as an MC docket number, plus a USDOT number. Brokers also have their own financial security requirement instead of the carrier liability filing.

Every new carrier, by 7am

Owner name, phone, email, fleet, equipment and insurer for each carrier FMCSA authorized yesterday, as a CSV.

See plans Build a free list

Sources: FMCSA: Do I Need a USDOT Number? · FMCSA: Get Operating Authority (Docket Number) · FMCSA: Insurance Filing Requirements · FMCSA: Changes to FMCSA Registrations in Motus · FreightWaves: authority conversion rates (CarrierOk research)