NC intrastate vs interstate trucking: when you need USDOT and MC numbers

The short version

If a load is part of a trip that starts or ends outside North Carolina, it is interstate commerce, even if your truck never leaves the state. Federal rules then apply to trucks from 10,001 pounds. [1]

Every interstate carrier with a commercial motor vehicle needs a USDOT number. For-hire carriers of regulated freight across state lines also need operating authority, the MC number, from FMCSA. [4][11]

North Carolina has its own layer. Intrastate trucks over 26,000 pounds must be marked with a USDOT number followed by "NC", and intrastate for-hire carriers must register with NCDMV. [19][23]

As of September 2026, MC numbers still exist. FMCSA's new Motus registration system did not remove them, despite what some websites say. [38][39]

Interstate or intrastate: where the line falls

Federal rule 49 CFR 390.5 defines interstate commerce three ways. A trip between NC and another state or country counts. So does a trip between two NC points that passes through another state. [1]

The third way catches many drivers. A move between two NC points is interstate when it is part of a shipment that began or will end outside NC or outside the country. Anything else is intrastate. [1]

FMCSA guidance, as quoted by J.J. Keller, says the test is the "essential character of the movement" and the shipper's intent at the time of shipment. The route alone does not decide it. [33]

So an import container hauled from the Port of Wilmington to an NC warehouse can be interstate, because the freight started outside the U.S. The Highway Patrol's FAQ gives air freight as another example. [22][1]

North Carolina law uses the same federal definitions. G.S. 20-376 points straight to 49 CFR 390.5 for both terms. [14]

When you need a USDOT number

Under 49 CFR 390.19T, every motor carrier running in interstate commerce must file Form MCS-150 before it starts operating. FMCSA then issues a USDOT number. [4]

That applies to commercial motor vehicles. Federally, that means a truck or combination rated or weighing 10,001 pounds or more, or one carrying placarded hazmat or certain passenger loads. [1]

You must update the MCS-150 every 24 months. The month is set by the last digit of your USDOT number, and the year by whether the next-to-last digit is odd or even. Missing it can get the number deactivated. [4]

Each power unit must show your legal or trade name and "USDOT" with the number on both sides. It must be readable from 50 feet in daylight, and removable signs are allowed. [7]

North Carolina reaches intrastate trucks too. G.S. 20-101(b) says a vehicle over 26,000 pounds GVWR in intrastate commerce must show the owner's name and "USDOT" plus the number, followed by "NC", on each side. [19]

Those letters must be at least 3 inches high. Trucks on farm plates under G.S. 20-88 are exempt, and so are trucks already covered by the federal marking rule. [19]

The Highway Patrol's FAQ says any business truck of 10,001 pounds or more that crosses state lines or hauls interstate freight needs a federal USDOT number and company name on it. [22]

When you need an MC number

An MC number is operating authority. Under 49 U.S.C. 13902, FMCSA registers a for-hire carrier only if it is fit and willing to follow safety rules, carries the required insurance, and already has a USDOT number. [11]

Haulers of exempt freight do not need authority. 49 U.S.C. 13506 lists unprocessed farm products, ordinary livestock, fresh fish, and feed or seed going to a farm, among others. [9]

Manufactured products do not qualify, and exempt haulers still need a USDOT number and must follow safety rules. The exemption is only from operating authority. [9][4]

The filing fee is $300 for each type of authority, under 49 CFR 360.3T. It is not refunded once FMCSA accepts the application. [34]

FMCSA publishes your application. Anyone may protest within 10 days. Under 49 CFR 365.109T, you must file proof of insurance and a BOC-3 process agent form within 20 days of that notice. [37][36]

Authority is granted when the notice goes unopposed and your filings are in. Filing insurance and the BOC-3 early keeps you inside that 20-day window. [36][37]

Motus and the future of MC numbers, as of September 2026

FMCSA is moving registration to a new system called Motus. Its April 29, 2026 Federal Register notice said Motus replaces the old system for new USDOT and authority applications. [38]

The same notice said the release did not eliminate MC numbers or change BOC-3 filing. Those changes would come later. Law firm Scopelitis and FreightWaves reported the same in May 2026. [38][39][40]

We checked the Federal Register on September 25, 2026 and found no FMCSA rule since then that ends MC numbers. So MC numbers remain in use for now. [41]

Motus adds identity checks for new applicants and for existing accounts at first login. FMCSA says it is fighting fraud, including the selling of carrier numbers, and says initial review takes at least 8 business days. [38]

Registering with North Carolina

Intrastate for-hire carriers have to register in NC. Under G.S. 20-382.1, a carrier that does not haul household goods must register its operations with NCDMV, verify insurance for each for-hire truck, and pay any fees. [23]

Household goods movers need more. They need a certificate of authority from the NC Utilities Commission, or a certificate of exemption from DMV. G.S. 62-262 limits the Commission's certificates to passengers and household goods. [23][31]

Interstate for-hire carriers also register with NC. G.S. 20-382 requires base-state registration, a copy of federal authority or a statement that you haul only unregulated freight, and verified insurance. [24]

Fees under G.S. 20-385 include $77.25 for a certificate of exemption and $29.50 for an emergency trip permit good for up to 10 days. These are on top of UCR. [25][24]

Running a for-hire truck without registering carries a $1,000 civil penalty. The Highway Patrol must also put the truck out of service until you comply, under G.S. 20-382.2. [26]

The Patrol's FAQ lists two phone numbers. General freight haulers call the NCDMV IRP Unit at (919) 861-3720. Movers and passenger carriers call the Utilities Commission at (919) 733-4035. Confirm them before you rely on them. [22]

Insurance minimums

Federally, a for-hire interstate carrier hauling general freight in trucks of 10,001 pounds or more needs $750,000 in liability coverage under 49 CFR 387.9. [13]

Most hazmat loads need $1 million. Certain bulk and high-hazard loads need $5 million, and that tier covers intrastate carriers too. You cannot run until the coverage is in place, under 49 CFR 387.7. [13][12]

NC matches the federal floor. G.S. 20-309(a1) requires the owner of a commercial motor vehicle, as NC defines it, to carry coverage equal to the federal $750,000 level. [28]

NC's definition in G.S. 20-4.01(3d) covers Class A combinations of 26,001 pounds or more, any Class B vehicle, and some Class C vehicles that carry 16 or more people or placarded hazmat. [29]

UCR: the yearly federal fee

The Unified Carrier Registration fee is charged by fleet size. Under 49 U.S.C. 14504a, it covers private carriers and carriers of exempt freight as well as for-hire carriers. [42]

For 2026, the fee is $46 for 0 to 2 trucks, $138 for 3 to 5, $276 for 6 to 20 and $963 for 21 to 100. Brokers pay $46. [43]

FMCSA's September 1, 2026 rule raises 2027 fees by about 20%. The fee becomes $55 for 0 to 2 trucks, $167 for 3 to 5, $333 for 6 to 20 and $1,163 for 21 to 100. The rule takes effect October 1, 2026. [43]

NC law lets the state take part in UCR, and UCR controls where it conflicts with NC's registration statute. [24]

What changes for intrastate drivers

NC applies the federal safety rules, Parts 390 to 397, to intrastate trucks of 26,001 pounds or more, or that carry 16 or more people or placarded hazmat. That is set out in 14B NCAC 07C .0101. [15][14]

The hours are different. An intrastate driver may drive 12 hours after 8 off, may not drive after 16 hours on duty, and has a 70-hour/7-day or 80-hour/8-day limit. [15]

Compare the federal interstate rule: 11 hours driving after 10 off, a 14-hour window, and a 60/7 or 70/8 limit. [44]

Age differs too. Federal rules require interstate drivers to be 21. NC intrastate drivers are exempt from that rule, and G.S. 20-37.13 lets NC issue a CDL at 18 to drivers not subject to it. [45][15][17]

Some rules reach lighter trucks. Periodic inspections apply to intrastate trucks over 10,000 pounds GVWR, and federal hazmat rules apply to every truck, interstate or not. [15]

The Highway Patrol's Motor Carrier Enforcement section runs weigh stations, audits and roadside inspections. It enforces these rules for both kinds of carriers. [22][18]