Almost every question a new carrier brings us starts here. They have a truck, they have a customer, and someone has told them they need a number. The trouble is that there are two numbers, they are issued for different reasons, and a carrier can need one, the other, or both. Getting it wrong shows up at a roadside inspection or when a broker refuses the load. This is the plain version.
The USDOT number: identification
A USDOT number identifies a carrier. It is the number the Federal Motor Carrier Safety Administration uses to track your inspections, crashes, audits and safety rating. It is free, it is issued once, and it stays with the company for life. Federal rules require it for any vehicle used in interstate commerce that weighs over the threshold, carries a placarded quantity of hazardous materials, or carries passengers above set limits. Texas goes further and requires a USDOT number for commercial vehicles operating only within the state as well, so for practical purposes nearly every commercial truck based in Midland needs one.
MC authority: permission to haul for hire
Operating authority, historically called an MC number, is permission from the federal government to transport regulated commodities or passengers for hire across state lines. It is what makes you a for-hire carrier rather than a private one. It costs a filing fee, it requires proof of insurance filed by your insurer and a designated process agent in each state, and it can be revoked if the insurance lapses. A carrier hauling only its own goods, or hauling only inside Texas, may not need it at all.
Which situations need what
- A hot shot hauling oilfield equipment for a customer from Midland to Hobbs, New Mexico: USDOT number and interstate for-hire authority, because the load crosses a state line and you are paid to move it.
- A water hauler working only Texas leases for a Texas customer: USDOT number and Texas intrastate motor carrier registration with TxDMV, but not federal operating authority.
- A construction company moving its own materials to its own job sites in Texas: USDOT number, no operating authority, because nothing is hauled for hire.
- A dump truck carrying gravel for a contractor into Andrews County only: USDOT number and TxDMV registration.
- Any of the above the first time a load goes to New Mexico or Oklahoma for pay: interstate authority is required before that trip, not after.
Interstate does not only mean the truck crosses the line. Freight that begins or ends its journey in another state is interstate even if your leg of it stays inside Texas. Drayage from a rail yard, or hauling a load that a broker is routing out of state, can put you in interstate commerce without leaving the county.
What comes with each
- 01USDOT number: the MCS-150 update every two years, a driver qualification file for each driver, drug and alcohol testing for CDL drivers, vehicle maintenance records, and hours-of-service compliance.
- 02Interstate authority: everything above plus insurance filings at federal minimums, a process agent designation, UCR registration each year, IFTA and IRP for fuel and plates across states, and the new entrant safety audit in the first months.
- 03Texas intrastate: everything under the USDOT number plus TxDMV motor carrier registration, Texas insurance minimums, and the state's own inspection requirements.
Frequently asked questions
How long does operating authority take?
The application is quick; the waiting is not. After filing there is a protest period, and the authority is not active until the insurance and process agent filings are on record. Plan on weeks, not days, and do not book a load against it before it shows active.
Can I lease onto another carrier instead?
Yes. An owner-operator leased to a carrier runs under that carrier's authority and USDOT number. You give up some rate and some independence in exchange for skipping the authority, insurance filings and audit.
My authority shows inactive. What happened?
Almost always an insurance lapse or a cancelled process agent filing. Fix the underlying filing and request reinstatement; a reinstatement fee applies.
We set carriers up
USDOT numbers, operating authority, TxDMV registration and the filings that follow are our DOT compliance service. Bring your insurance quote and your plan and we will tell you what you need. Call (432) 257-7547 or come by 700 C Andrews Hwy in Midland. English and Spanish.
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